Work Commitment as Mediation of the Relationship Between Competency and Work Motivation on Employee Performance in Asttatindo (Indonesian Expert and Skilled Engineering Association)

Objective: The research objective was to analyze the influence of Employee competency s significantly on work commitment and employee performance the influence of work Competence on Work Commitment and Employee Performance, the influence of Work commitment on Employee Performance, and the role of work commitment as a variable mediating the relationship between competence and work motivation and employee performance. Methodology: This type of research uses survey research methods with a quantitative research approach. Survey research is intended to explain causal relationships and test hypotheses using the SEM-PLS model. SmartPls 4 v.4.0.9.4 is a multivariate statistical technique that compares exogenous with endogenous variables. The population of the study are members of Asttatindo, namely 24,000 construction workers who have had education and training and/or are members of Asttatindo. Sampling uses incidental sampling and purposive or judgment sampling, namely sampling based on the number of respondents who fill out the instrument and must match the proportion of the sample required in the SEM-SmartPls model. A minimum sample of 130 employee respondents is required. Incidental sampling can be achieved with 130 (between 130 -1000) respondents. Findings: Based on the results of hypothesis testing using Smart PLS it shows that: the first hypothesis (H1) is accepted because the t-count value is 8.483 < t table =


LITERATURE REVIEW AND HYPOTHESIS DEVELOPMENT Competence
Armstrong (2010) defines competence as a fundamental characteristic of individuals that is causally related to effectiveness or excellent performance.Meanwhile, according to Scale 1975 cited by Sutrisno (2009), competence means proficiency, ability, and authority while etymologically, competence is defined as the behavioral dimensions of expertise or excellence of a leader or staff who has good skills, knowledge, and behavior.This is in line with the opinion of Stone (2017) that competency or competence is often used in measuring the ability of people to carry out a job.Slocum & Hellriegel., (2009) explained competency is a combination of knowledge, skill, behaviors, and attitudes that contribute to personal effectiveness.
Competency refers to the underlying characteristics of behavior that describe the motives, personal characteristics (characteristics), self-concept, values, knowledge, or skills of someone who is a superior performer in the workplace (Palan, 2007).The research describes different types of characteristics, that drive behavior, asserting that competencies are about people as such and what they can do, not what they might do.Therefore, competencies are jobrelated knowledge, skills, and attitudes that affect a large part of one's job (role or responsibility) which correlate with performance on the job and can be measured against accepted standards (Bernardin, 2010).Abilities are described as descriptions that describe capabilities to perform specific jobs and include specific skills or specialized knowledge to define all competencies with specific, observable, and verifiable descriptions that are reliably and logically classified together.Spencer & Spencer (1993) emphasize physical and non-physical competencies where competency is an underlying characteristic of an individual and is causally related to criterionreferenced effective and/or superior performance in job situation".Competence is an underlying characteristic of an individual's behavior that can determine superior performance and/or influence organizational goals.This opinion is similar to the opinion of the head of the Construction Labor Sub-directorate on the Competence and Productivity of Construction.Nazir (2023) notes the competence of the construction service workforce (employees) is related to the knowledge that underlies the implementation of their work which can be obtained from formal education, training, or based on experience.Spencer & Spencer (1993) describe competence as having 5 characteristics that are currently also used by the Ministry of Public Works Nazir namely: (1) Motives: Everything that is consistently thought or desired to happen.Motives control, direct, and select behavior towards certain actions or goals.(2) Traits: Physical characteristics and consistent responses to situations or information.(3) Self-Concept: A person's attitudes, values, or self-image.(4) Knowledge: Information that a person possesses in a specific area.(5) Skill: An employee's p-ISSN: 2088-1231 e-ISSN: 2460-5328 580 https://publikasi.mercubuana.ac.id/index.php/jurnal_MixZabri & Ghazzawi (2019) organizational commitment (OC), is defined as "the relative strength of an individual's identification with and involvement in a particular organization".
According to Robbins & Judge (2013), organizational commitment is "the degree to which an employee identifies with a particular organization and its goals and wishes to maintain membership in the organization".In line with this, Luthans (2008) describes work commitment as an attitude, organizational commitment is most often defined as (1) a strong desire to remain a member of a particular organization, (2) a willingness to exert a high level of effort on behalf of the organization, and (3) a definite belief in and acceptance of the values and goals of the organization.This is in according with the concept of attitude which is "a cognitive and affective evaluation that initially encourages a person to take certain actions" (Daft, 2010).Many studies use the postulate of Meyer, Allen, and Smith, as cited by Robbins & Judge (2013), that organizational commitment can be known through "three separate dimensions, namely: "(1) affective commitment, which is an emotional feeling towards the organization and belief in its values, (2) continuance commitment is the perceived economic value of staying in an organization when compared to leaving the organization, and (3) normative commitment is the obligation to stay in the organization for moral or ethical reasons".

Employee Performance
Performance is defined here as the record of outcomes produced on specified job activities during a specified period (Bernardin, 2010).Performance is the documentation of an individual's work results according to the specified time.This definition sees performance as work behavior where work results have a relationship with personal characteristics (for example: dependability, integrity, perseverance, knowledge, attitude, and loyalty), even though these factors are not actual performance measurements, they contribute to determining the overall performance (Bernardin, 2010).In other words, performance is not only measured based on the quality and quantity or amount of work but it is also necessary to have an assessment related to work attitudes and behavior.Performance as a result and behavior is also stated by Campbell (1990): "Performance is a behavior and should be distinguished from the outcome because they can be contaminated by systems factors".This definition not only sees performance as an outcome but performance is also as a behavior that needs to be distinguished since work outcomes and behavior can be influenced by organizational system factors (Soelton et al., 2019;Widodo et al., 2022;Asda &Nilasari, 2022, andSunatar, 2023).
Another opinion that supports this statement by Brumbach cited by Armstrong (2010) is that performance means both behaviors and results.Behaviors emanate from the performer and transform performance from abstraction to action.Behaviors are also outcomes in their own right, they are the product of mental and physical effort which is applied to the task and can be assessed separately from the outcome.Indications of behavior that originate from an individual are transformed into an action and besides that, behavior is also a result that is produced psychologically and physically to produce performance.Research by Jufrizen et al., (2021) also explains that performance is a person's success in carrying out tasks, work results that can be achieved by a person or group of people in an organization in accordance with their respective authorities and responsibilities or how a person is expected to function and behave in accordance with the tasks assigned to him and the quantity, quality and time spent in carrying out tasks.In the research of Kumari et al., (2021), the author made there created a traditional dimensional model and structure that broke down job performance into contextual and task performance.When talking about task performance, encompasses individual behaviors while performing their defined roles.On the other hand, contextual performance considers the

581
interpersonal relationships that the people forge voluntarily to help perform the task which boosts the organization's effectiveness (Imran & Abbas, 2020).
In principle, performance is not only seen from the perspective of results but also from the behavior of individuals or employees in the organization to carry out various activities.This is in line with the opinion Bernardin (2010) that there are six performance indicators, namely: Quality: related to the process or results are close to perfect / ideal to meet the intent or purpose; Quantity: related to the amount of production, expressed in certain units or the number of activity completion cycles; Timelines related to the timeliness required in completing a job or the level at which an activity is completed in a period faster than the set time and utilizes the time available for other activities; Cost-effectiveness is related to the level of use of organizational resources (people, money, materials, technology) in obtaining results or reducing waste in the use of organizational resources; Need for supervision is related to the ability of individuals to complete work or job functions without the existence of leaders or supervisory intervention of leaders; Interpersonal impact is related to the ability of individuals to increase self-esteem, goodwill, and cooperation among fellow workers.

Employee Competencies and Work Commitment
According to Spencer & Spencer (1993), competence is a basic characteristic of individual behavior that can determine superior performance and/or influence organizational goals.Supporting this opinion, (Palan, 2007) believes that employee competence (such as knowledge and skills) can make work in a superior way (superior performer).Meanwhile, organizational commitment (work commitment) is defined as the relative strength of an individual's identification or involvement in a particular organization.The knowledge and skills of employees who use it to work following the wishes of the company are also loyal or attached to the company.In other words, employee competence (for example, knowledge, skills, and self-concept) can affect the level of loyalty or work commitment.Many authors find that employee competence has a positive impact on loyalty which includes affective commitment, continuance commitment, and normative commitment (Noor et al., 2020;Siri et al., 2020;Martini et al., 2020;Gayathri & Aithal, 2023;and Lestari et al., 2022).Based on the discussion above, the following hypothesis is proposed: H1: Employee competency has a significant influence on work commitment.

Work Competencies and Employee Performance
Draganidis and Mentzas state that employee competence is a combination of tacit and explicit knowledge, behaviors, and skills that give a person the potential for effectiveness in performing tasks (Otoo, 2019).Similarly, several other authors postulate that employee competence needs to be a continuous concern of the company since it can improve employee performance (Parman et al., 2020).This is consistent with several other authors who found that increasing employee competence has a positive and significant impact on employee performance (Suriadi et al., 2018;Kwarteng & Servoh, 2022;Darmavika & Ridwan, 2023;and Mayastinasari, 2023).However, there is research that shows employee competencies do not influence employee performance (Wijaya & Setyaningrum, 2023).Based on the discussion above, the following hypothesis is proposed: H2: Employee competency has a significant influence on employee performance.

Work Motivation and Work Commitment
Motivation refers to forces within an individual that account for the level, direction, and persistence of effort expended at work (Schermerhorn, 2013).In line with this opinion, Sonandg 582 https://publikasi.mercubuana.ac.id/index.php/jurnal_Mix(2016) suggested that work motivation is the driving force for someone to contribute to organizational goals.Indicating that employees' efforts to work following the wishes of the company continuously, give birth to a sense of attachment and/or loyalty to the company.Meaning that employees are motivated because they have a sense of need to achieve work results that are relevant to company goals.Work commitment, for example, normative work commitment, namely the tendency of employees to remain in the organization is the effect of encouragement (intensity) to achieve individual, group, and organizational goals while intensity is how hard a person tries (Robbins & Judge, 2013).Studies show that work motivation has a direct influence on the level of work commitment (Gani et al., 2018;Melati et al., 2021;Marnisah et al., 2022;Lutfi et al., 2022;Badrianto & Permatasari, 2022;and Wibowo et al., 2023).Based on the discussion above, the following hypothesis is proposed: H3: Work Competence has a significant influence on Work Commitment.

Work Motivation and Employee Performance
Employee performance is not only a result but also a behavior that needs to be distinguished, because work results and behavior can be influenced by organizational system factors (Campbell, 1990).Work results that meet company goals are the needs of every company.Therefore, all employee efforts in achieving maximum work results can contribute to company performance in the long term.The results of research conducted by (Langat et al., 2019;Salim et al., 2023;Sutrisna, 2023;Tella & Ibinaiye, 2020;Apex-Apeh et al., 2020;Eliyana et al., 2020;Al-Jedaia & Mehrez, 2020;and Syamsir, 2020) show that work motivation directly has a significant effect on employee performance.For example, the results of research (Prabowo & Yulianti, 2022) concluded that employee work motivation is a critical factor in consistently improving employee performance.Based on the discussion above, the following hypothesis is proposed: H4: Work Motivation has a significant influence on Employee Performance.

Work Commitment and Employee Performance
Various studies reveal that work commitment consisting of affective commitment, continuance commitment, and normative commitment can improve employee performance (Abdirahman et al., 2018;Azmy, 2022;Paramita et al., 2020;Nguyen & Ngo, 2020;Purkan et al., 2023;Sari et al., 2023;Fachrudi et al., 2021;Loan, 2020;and Karem et al., 2019).Although the author found there was no effect of affective commitment on employee performance.Similarly, other researchers, namely Metin & Asli (2018) revealed that affective commitment has a positive and significant effect on work performance while normative commitment and continuance commitment do not affect work performance.Overall, the literature review of this paper indicates a significant relationship between work commitment and employee performance.Based on the discussion above, the following hypothesis is proposed: H5: Work Motivation has a significant influence on Employee Performance.

Work Commitment Mediating the Effect of Work Competence on Employee Performance
As previously explained, that previous authors revealed work commitment and work competence have a direct effect on employee performance.Work commitment can also mediate the influence of competence on employee performance.The study (Nugroho et al., 2019) using a sample of 160 employees revealed that employee work commitment that increased can have a strengthening impact on individual performance.Supporting this, other researchers also reported that work commitment mediates the effect of competence with employee performance (Silaban et al., 2021, Hafid et al., 2022;Wahyuningtyasti, 2023;Sutaguna et al., 2023;and Anggriawan et al., 2023).This paper is the same as the previous authors (Sari et al., 2020;and Anwar & Aima, 2020) but the population and/or sample are employees in the public sector.The research focuses on the performance of private sector employees, especially labor (employees) in Construction Companies in Indonesia that are registered as Asttatindo members.Based on the discussion above, the following hypothesis is proposed: H6: Work Commitment Significantly Mediates the Effect of Work Competence on Employee Performance

Work Commitment Mediating the Effect of Work Motivation on Employee Performance
Work motivation has an impact on employee performance directly where this influence can also be mediated by work commitment.Previous research explains that work motivation improves employee performance, directly and indirectly (Erawati & Wahyono., 2019).Work motivation is the driving force for someone to make the greatest contribution to achieving the goals of an organization (Siagian, 2016).Organizational goals can be achieved along with employee performance that is relevant to organizational goals.The process of employee identification (commitment) with the organization and wanting to actively participate to continue a job is related to organizational goals (Davis & Newstrom, 2002).Supporting this, previous research revealed that work commitment significantly mediates the effect of work motivation on employee performance (Dewi et al., 2021;Mubarak et al., 2022;Kawiana, 2024;Nawangsari et al., 2023;and Sudama, 2022).Based on the discussion above, the following hypothesis is proposed: H7: Work Commitment Significantly Mediates the Effect of Work Motivation on Employee Performance

RESEARCH METHODS
This research is descriptive and verifying, carried out through primary data collection in the field.Therefore, the research method used is an explanatory survey method which aims to collect data on objects in the field by taking samples from a population and using a questionnaire as the main data collection tool.This type of research uses survey research methods with a quantitative research approach.Survey research is intended to explain causal relationships and test hypotheses using the SEM-PLS model.The test tool using SmartPls 4 v.4.0.9.4 is a multivariate statistical technique that compares exogenous variables, namely: work competence (X1-CY) = 13 items and work motivation (X2-MN) = 12 items while The score on each question item for variables X1, X2, X3, and Y uses a weighting approach of 1 to 5. The weighting numbers have meaning: 1 (strongly disagree); 2 (disagree); 3 (disagree); 4 (agree); and 5 (strongly agree).The sample size in this study is based on the opinion of Hair et al., (2014) that the research sample is obtained from the number of research indicators of exogenous variables (the largest number) multiplied by 10.Asttatindo has a membership of 24,000 construction workers who have been certified at the end of 2021 throughout Indonesia.The population is Asttatindo members, namely construction workers who have been trained and/or as Asttatindo members.Sampling used incidental sampling and Purposive or Judgment sampling, namely sampling based on the number of respondents who filled out the instrument and must be in accordance with the sample proportions required in the SEM-SmartPls model.In this study, the number of indicators with the most arrows on the exogenous variable is work competence, which is 13 multiplied by 10 (13 x 10) equals 130. Therefore, the minimum sample is 130 employee respondents.It is likely that incidental sampling can be achieved with more than 130 respondents (between 130 -1000). According

RESULT AND DISCUSSION Result Outer Model Evaluation
The first step to assessing a reflective measurement model involves assessing indicator loading.The next steps are convergent validity, Discriminant Validity (Fornell-Larcker criterion and Heterotrait-Monotrait Ratio (HTMT), and Composite Reliability.A summary of the reflective measurement model can be seen in Table 1.However, it needs to be explained that the results of the outer model test using SEM-SmartPls 4 for the first time show that there are indicators that have a loading factor smaller than 0.708, namely: CT2, CT11, MN6, MN10, MN11, MN12, PE11, PE12, PE13, PE14, PE15 Apart from these indicators, all of them have a loading factor> 0.70.This is according to Hair et al., (2014) reflective indicator loading ≥ 0.708.Therefore, the indicators of exogenous variables and endogenous variables that have not been valid are removed and tested again.Based on Figure 2, it shows that not all valid research indicators are involved in the SEM-Smart PLS 4 estimation.In other words, some (partially) valid indicators also drop out because the outer loading algorithm output causes HTMT greater than 0.90.These indicators are CT1, CT7, CT8, CT9, CT10, CY6, CY7, CY8, CY9, CY10, CY11, MN4, PE5, PE6, PE7, PE8, PE9.Estimation of indicator loading (outer loading) after this step is carried out.
Based on the results of the 2nd outer loading evaluation, it show that the convergent validity test with reflective indicators as a whole is significant since the loading factor of some indicators (table 1) on the research variables is more than 0.708.In addition, the Average Variance Extracted (AVE) value of the Indicator Loading variable work competence (X1-CY), work motivation (X2-MN), work commitment (X3-CT) and employee performance (Y-PE) is greater than the loading factor value (rule of thumbs) which is 0.50 or the average variance extracted value has a value of more than 0.50 (AVE ≥ 0.50) (Hair et al., 2019).This also means that all indicators of exogenous and endogenous variables are suitable for use in this study.
The next step is to evaluate discriminant validity which is the extent to which a construct is empirically different from other constructs in the structural model.Based on the Fornell-Larcker value in SmartPls 4 output, it shows that the AVE of the average variance is higher than the correlation involving latent variables (indicators).For example: the X1-CY reflective construction has a value of 0.794 higher than the correlation value in column X1.Thus, all items on this research instrument are valid or can be used in research.However, according to Henseler et al., 2015 cited by Hair et al., (2019) that the Fornell Larcker criterion does not work well, especially when the indicator load on the construct is only slightly different (e.g.all indicator loads are between 0.65 and 0.85).Instead, proposed the heterotrait-monotrait ratio (HTMT) of correlations (Voorhees et al., 2016 cited by Hair et al., 2019) average value of item correlations across constructs relative to the (geometric) average of correlations for items measuring the same construct.The procedure for assessing discriminant validity uses the Heterotrait-Monotrait Ratio (HTMT) method as discussed by Henseler et al., (2015) which uses the standard measurement value of 0.85 as the upper limit of the ratio and states that the distribution of ratio values below 0.85 and/or <0.90 is declared discriminant valid.The entire distribution of values shows that it is still below 0.90 (0.720; 0.794; 0.770; 0.888; 0.893, and 0.857) so it is stated that the overall construct is discriminant valid (Henseler et al., 2015).Meaning, that the average value of the items of all constructs relative to the (geometric) average of the average correlation of indicators measuring the same construct is in the good category (good discriminant validity).In addition, all measurement items have discriminant validity since each item is correlated greater than all loading on other constructs (cross-loading).For example, digital marketing indicator loading (MN1 -MN9) of 0.612; 0.648; 0.601; 0.506; 0.422; 0.478; and 0.514 are greater than all other variable indicator loading (cross loading), respectively.Finally, composite reliability is assessed.Assessing internal consistency reliability uses the Jöreskog (1971) composite reliability.For example, reliability values between 0.60 and 0.70 are considered "acceptable in exploratory research," and values between 0.70 and 0.90 range from "satisfactory to good" (Hair et al., 2019).Based on the SmartPLS output results in Table 1, it shows that all constructs have a composite reliability value above 0.60 to 0.70.In addition, Cronbach's alpha is above 0.60.So, it can be stated that the construct has good reliability according to Hair et al., (2019).Cronbach's alpha is another measure of internal consistency reliability that assumes the same threshold but produces a lower value than composite reliability.

Reflective Inner Model Evaluation
Based on the results of the VIF calculation in the table, it show that the model in this study does not have a collinearity problem because it has a VIF (inner models) value that is smaller than ≥ 3-5.As Hair et al., (2019) argue, the ideal research model does not experience multicollinearity if the VIF value is ≥ 3-5.The R 2 (R-Squares) value is the coefficient of determination where this value represents the effect of the combination of exogenous latent variables on endogenous latent variables in the structural model.In addition, the R 2 value is the result of a linear regression test, namely the amount of endogenous variability that can be explained by exogenous variables.The model is said to be strong if it has an R-Squares value of 0.67, the moderate model requires an R-Square value of 0.33 and an R-Squares value of 0.19 indicates a weakly predicted model (Ghozali & Latan, 2015).Source: Processed by the Authors, 2023.
Based on Table 2, the determination coefficients can be explained as follows: (1) work competence and work motivation effect on work commitment is 0.624.This means that the exogenous variables can predict the endogenous variable (work commitment) by 62.40% which is in the moderate category; then (2) work competence, work motivation, and work commitment affect employee performance of 0.760 which is in the strong (substantial) category.This means that the exogenous variables can predict the endogenous variable, namely employee performance by 76.00% which is in the strong category.Next is Testing f 2 endogenous construct evaluation to see the amount of exogenous substantive influence (f 2 effect sizes) and total effect.The f 2 value will see the substantive effect of exogenous on endogenous constructs.
Changes in the value of f 2 effect sizes when certain exogenous constructs are removed from the model can be used to evaluate whether the removed construct has a substantive impact on endogenous constructs.Hair et al., (2019) state: "Guidelines for assessing f 2 are that values of 0.02, 0.15, and 0.35, respectively, represent small, medium, and large effects of the exogenous latent variable".This means that the model in the study has an average value of f 2 at the medium level or the construction of this research model has medium predictive power.
Q 2 predictive relevance value on endogenous variables, namely: X3-CT (work commitment) and Y-PE (employee performance) are 0.616 and 0.731 respectively (see Table 2).Q 2 predict has the predictive power of exogenous variables on endogenous variables in the large (Q2 = 0.616 ≥ 0.50) and medium (Q 2 = 0.652 <0.50) categories or large predictive accuracy of the PLS path model.This explanation is in line with the opinion of Hair et al. (2019) that the guidelines for the Q 2 value are based on values higher than 0 (small); 0.25 (medium); and 0.50 (large) of the PLS path model.Next is PLSpredict's inner model evaluation of the predictive power of a model.The method is to compare the root mean squared error (RMSE) value with the linear regression model (LM).PLSpredict output is presented in the table below.Based on the PLSpredict evaluation (RMSE versus LM), it shows that PLS-SEM-RMSE and PLS-SEM-MAE from PLS-SEM analysis have a higher majority prediction error than the linear regression model (LM).These results indicate that the model in this study has low predictive power.This evaluation is in accordance with the opinion of Hair et al. (2019), "the majority (low predictive power), the minority or the same number (medium predictive power) or none of the indicators (high predictive power)." The GoF index of the study also needs to be evaluated, and can only be calculated from the reflective measurement model which is the root geometric product of the mean communality with the mean R square (Yamin, 2023).Communality is the square of the loading factor.According to Wetzels et al ( 2009), the interpretation GoF index value is 0.1 (low), 0.25 (medium), and 0.36 (high).For example, the calculation results show that the GoF index of X3-CT and Y-PE are √(0.624x 0.621) = 0.6224 (62.24%) and 0.760 x 0.757 = 0.7583 (75.83%) respectively, including the high GoF category.In other words, the empirical data is able to explain the measurement model and measurement model with a high level of fit.In addition, you can also see the Standardized Square Root Mean Residual (SRMR) based on the Saturated model value = 0.104 and Estimated model = 0.104.The recommended SRMR value is less than 0.08.However, another opinion by Karin Schermelleh et al (2003) states that SRMR between 0.08 -0.10 is still acceptable (Yamin, 2023).The SRMR value shows that this research model is = 0.10 which means that the model built matches the empirical data.

Hypothesis Testing
To assess the significance of the prediction model in testing the structural model, it can be seen from the t-statistic value between the exogenous and endogenous variable in Table 4 Bootstrapping output of SmartPLS 4 Version 4.0.9.4 below:

The Effect of Work Competence on Work Commitment and Employee Performance
Work competence has a positive and significant effect on work commitment because the t count is greater than the t table and the p-value is smaller than 0.05.The results of this study are in accordance with the opinion expressed by Spencer & Spencer (1993) that employee competence is a basic characteristic of individual behavior that can determine superior performance and/or influence organizational goals.This means that an employee who consistently uses knowledge and skills in carrying out his work is a form of loyalty to his work, including his job.The results of this study also support previous research, that employee competence has a significant effect on employee performance (Noor et al., 2020).The results of Noor et al.'s research also concluded that his research only examined public sector employees and still requires further research using other variables and/or adding certain relevant variables.This indicates that affective commitment, normative commitment, and continuance commitment from construction service employees in Indonesia can be maintained by employees if employees understand and use their competencies at work.For example, employees who have traits tend to use physical abilities and consistently respond to situations or information directly related to their work.
The results of this study also show that the effect of the construction of this research model has medium predictive power.Thus, work competency contributes positively and significantly to work commitment but there is still a need for competency management in the future.Therefore, it is necessary to group competencies in the company according to the work of construction service employees, especially employees who have been certified.Competency groupings include achievement and action, helping and human service, impact and influence, and managerial.In addition, employees need to understand the concept of competence so that they can control themselves well, be able to evaluate work independently, be disciplined, and understand and be able to use knowledge and skills in accordance with job qualifications.For example, the qualifications of operator employees, at least, are required to understand and carry out walk-around inspections, and check fuel lubricants, water cooling, batteries, and others.
Competency in this study not only affects commitment but also affects employee performance.The effect is because the t-count value is greater than the t table and the p-value is smaller than 0.05.These results support Bernardin's (2010) statement that an employee's knowledge, skills, and attitudes can affect most of a person's work or responsibilities which correlates to having an impact on task performance.So, it is clear that competency is an important factor to be owned by construction service employees, especially competencies that are hidden, namely motives, traits, and self-concept.According to Spencer & Spencer (1993), trait and motive competencies are like an "iceberg" related to personality and are more difficult to assess and develop.However, the results of this study support previous research that work competence has a significant effect on work commitment (Noor et al., 2020;Siri et al., 2020;Martini et al., 2020;Gayathri & Aithal, 2023;and Lestari et al., 2022).Other research results also support that competency has a significant effect on employee performance (Nguyen & Ngo, 2020;Purkan et al., 2023;Sari et al., 2023;Fachrudi et al., 2021;Loan, 2020, andKarem et al., 2019).

The Effect of Work Motivation on Work Commitment and Employee Performance
The results of the second (H2) and third hypothesis tests (H3) show that work motivation has a significant effect on work commitment and affects employee performance.These results are implicitly in accordance with the opinion of Schermerhorn (2013) that work motivation refers to the strength that exists in individuals which includes the level, direction, and persistence of effort in doing their work.A construction service employee who has been certified is likely to have qualified knowledge and skills.However, this ability cannot be separated from intrinsic factors (employee self).Employee loyalty to the company needs to be supported by employee motivation.Employee motivation which includes existence, relatedness, and growth is able to change employee behavior to stay involved in the company.This is a form of employee commitment to work and/or organization.For example, mechanically qualified construction employees not only have mechanical knowledge but also need to understand the basis or hierarchy of their needs since work motivation is a part of the personality that cannot be copied from and to another person.
In relation to the above, companies need to pay attention to several things in the dimensions of work motivation, namely: existence, relatedness, and growth.For example, existence is related to needs that are satisfied by factors such as food, air, rewards, and working conditions.Thus, companies need to understand this so that they can formulate policies that benefit the company and its employees.Previous research found that work motivation has a positive and significant effect on work commitment (Melati et al., 2021;Marnisah et al., 2022;Lutfi et al., 2022, andBadrianto &Permatasari, 2022).In addition, the authors concluded that work motivation can improve employee performance in both the public and private sectors (Langat et al., 2019;Salim et al., 2023;Sutrisna, 2023;Tella & Ibinaiye, 2020;Apex-Apeh et al., 2020;Eliyana et al., 2020;Al-Jedaia &Mehrez, 2020, andSyamsir, 2020) In line with this, Prabowo & Yulianti (2022) concluded that employee work motivation is an important factor in consistently improving employee performance.The research provides inspiration or an overview of the importance of work motivation of construction service employees in synergizing with employee competency factors (visible and hidden competency).

The Effect of Work Commitment on Employee Performance
The results showed that work commitment has a significant effect on employee performance because the p-value is smaller than 0.05.The results are relevant to the opinion of Colquitt et al., (2014)  592 https://publikasi.mercubuana.ac.id/index.php/jurnal_Mixcompany.If employees no longer feel an attachment to the organization, they tend to look for and/or work for other companies.
Many previous relationships between variables have shown significance or positive predictions.However, the effect of work commitment on employee performance (H5 accepted) has a VIF value greater than other variables and has a low path coefficient.Therefore, construction service companies today should not only identify the competence or knowledge and skills of their employees but also need to identify and evaluate the level of employee commitment.For example, companies need to evaluate their employees in relation to obligation-based reasons (Colquitt et al., 2014) which formulates instruments about employee responses to company leadership at various levels (such as responses to leadership on various problems faced by employees).In addition, the results of this study are still consistent with previous authors that work commitment has a positive and significant effect on employee performance (Paramita et al., 2020;Nguyen & Ngo, 2020;Purkan et al., 2023;Sari et al., 2023;Fachrudi et al., 2021;Loan, 2020, andKarem et al., 2019).

The Effect of Work Competence and Motivation on Employee Performance Through Work Commitment
Work commitment is able to mediate the effect of work competency on employee performance significantly with the category of partial mediation.However, it partially mediates the effect on the low level.While at a medium level when mediating the effect of motivation on employee performance.As explained earlier, construction service companies currently need to understand and identify employee commitment systematically.This also provides important information that although Asttatindo has carried out certification to the construction workforce in accordance with its vision and mission, the labor owner (company) must also be responsible for maintaining employee competence on an ongoing basis.In other words, employees certified by Asttatindo are the company's assets or human resources and the company should manage the needs of its human resources comprehensively, especially as the commitment and competence are difficult to gauge.Apart from that, the results of the study are in line with previous research which shows that work commitment mediates the effect of competency and work motivation on job performance (Anggriawan et al., 2023;Silaban et al., 2021Nugroho et al., 2019;Sutaguna et al., 2023;Mubarak et al., 2022;Sari et al., 2020;and Anwar & Aima, 2020).

CONCLUSION
Based on the discussion above, the research conclusions are: work competency has a significant effect on work commitment.Employees who have competencies (for example, knowledge and skills) are able to increase employee work commitment; work competency has a significant effect on employee performance which means that employee competencies are able to be used by employees in creating work results that are relevant to company goals; work motivation has a significant effect on work commitment and employee performance.Employees who have intrinsic and extrinsic work motivation are able to have a significant effect on commitment and ultimately contribute positively to employee performance; finally, commitment is not only influenced by competency and motivation variables but also affects employee performance.Work commitment has an important role in improving performance because commitment is closely related to affective, normative, and continuance.However, the influence or prediction of the structural model of commitment and employee performance is at the medium and strong (substantial) levels, respectively.In addition, the model in this study has an average value of f 2 The mediation test of the indirect effect of work competence and work motivation respectively on employee performance through work commitment is a partial mediation category.As a result, employee commitment from normative, affective, and continuous perspectives has a dual impact, helping to both boost performance and foster a positive relationship between competency and work motivation variables on worker performance.Based on these conclusions, the suggestions of this study are: Companies need to identify trait and motive competencies because they are directly related to personality.In addition, companies need to hold training, psychotherapy, and/or knowledge-sharing activities to instill confidence in job success.In other words, employees who have received competency certification need to understand competencies academically, and practically, and voluntarily evaluate their performance periodically.In addition, the practical contribution of this research provides an important note to companies in Indonesia including Asttatindo that employee performance can not only be improved through knowledge and skills sourced from competence certification but requires understanding and manifestation of employee motivation and work commitment that requires collaboration between companies and employees in improving employee performance.In addition, employee motivation and commitment are not only the responsibility of Asttatindo but the main responsibility of the company as a consequence of one of the functions of labor recruitment.For future researchers, future studies can add research variables while the population stays consistent with employees of Asttatindo.Since, there is currently a lack of HRM research on construction service employees in Indonesia, especially workers who have competency certification.

Figure
Figure 3. Measurement Model SmartPls Source: Output SmartPLS 4, v.4.0.9.4,2023 work commitment is related to the desire of employees to keep the organization in mind.It is further explained that the effect of organizational commitment is related to whether employees stay at work or leave to continue or move to a new job or another level or the construction of this research model has medium predictive power.