THE IMPACT OF QUALITY OF WORK LIFE ON EMPLOYEE ORGANIZATION COMMITMENT OF CONSTRUCTION BUSINESS
The important objectives of this research were as follow; 1) to study the quality of work life and the organizational commitment of the employee construction business in Sakon Nakhon province 2) to compare the differences in quality of work life and organization commitment when classified by personal factors 3) to study the impact of quality of work life on organizational commitment of construction business employees in Sakon Nakhon Province.
This research is a survey research to study the impact of quality of working life on employee organization commitment of the construction business. The research methodology used in the research was as follow; this research has specified the target population is 28,351 construction employees in Sakon Nakhon province, and specifies the sample by calculating the sample size by using Taro's formula, which received a sample size of 400 people, use probability-based sampling methods, consisting of proportional sampling and simple random sampling. The tools used to collect data for conducting this research were questionnaires; list of questions about quality of work life was adapted from the concept of Walton  and Civil Aviation Safety Authority which consists of 24 questions, organizational commitment adapted from the concept of Porter et al.  and Nuengrutai and Watcharapong  which consists of 9 questions. The questionnaires in part 2 and part 3 are questions of opinion of respondents, the questionnaire is a rating scale based on the Likert Scale method, with the scoring criteria divided into 5 levels. Reliability test was Cronbach Alpha; the quality of work life was equal to 0.907, the organization commitment was 0.816 respectively. Hypothesis testing is divided into 2 parts as follows; the first part in testing the difference between quality of work life and organizational commitment when classified by personal factors was tested by Mean comparing which consists of the t-test and the F-test (One Way ANOVA), the second part in the testing of the impact of quality of work life on the employee organization commitment was use Pearson correlation coefficient, simple regression, and multiple regression.
The research results were as follow; the level of quality of work life of construction business employee and the employee organization commitment was high, by mean was at 3.97, and 4.10 respectively. The hypothesis test 1; there was found the statistic significant at 0.05 levels different in quality of work life and employee organization commitment when classified by personal factors in the aspect of; marital status, work experience, monthly income, and number of children. The hypothesis test 2; there was found that quality of working life could predict 46.5% of employee organization commitment, by the standardized coefficients (β) was at .682. From the research finding, it can be concluded that the quality of work life had a positive impact on employee organizational commitment.