The purposes of the study were to investigate factors affecting the organizational commitment explore organizational culture and examine work life quality of the employees which affected their organizational commitment at Rubber Authority of Thailand Headquarters. The questionnaire was applied to collect data from the 200 employee samples selected by proportional stratified random sampling at Rubber Authority of Thailand Headquarters. The data collected were analyzed by the percentage distribution mean and standard deviation; and t-test f-test and multiple regression analysis resulted at 0.05 statistical significance. The study results revealed that most of the samples were single females who were 30 years of age in the average or less holding bachelor degrees and having been working for five years or less. It was found that their organizational culture concerning clan culture achievement culture bureaucratic culture and adaptability culture highly resulted in high work life quality including organizational pride social relation safe and sanitary workplace work independence work progress and security work administration and employees’ capacity development were high. However the aspect of justified and sustainable income organizational commitment in terms of psychology norm and work tenure were average. The study results revealed as follows. 1) Different personal factors concerning the employee’ age education status and tenure range did not differ in the organizational commitment 2) the organizational culture had impact on the organizational commitment were clan culture achievement culture bureaucratic culture and adaptability culture. 3) Work life quality resulted in organizational pride social relation work administration employees’ capacity development and work progress and security 4) Organizational culture and work life quality had better impact on the organizational commitment than the organizational culture which included aspects on organizational pride social relation employees’ capacity development work administration and work progress and security. It was found that main organizational cultures were achievement and clan cultures.

The research objective was aimed to investigate social and environmental participations of PTT Public Company Limited personnel under the hypothesis that different personnel’s characteristics yielded different social and environmental participations. The employees’ characteristics were categorized in terms of gender age educational level marital status work position and work tenure. The sample were 274 PTT Public Company Limited. The analysis was generally viewed in four aspects: participation on decision making participation on operation participation on benefits obtained and participation on assessment. The data were analyzed by the computer program package to inquire about the percentage distribution mean and standard deviation; t-test and f-test were applied to observe the difference of the PTT Public Company Limited employees’ opinions on social and environmental participations to obtain 0.05 statistic significance. The study results revealed that the social and environmental participations were in average level. When considered each aspect it was found that the participation on decision making and participation on assessment were low while the participation on operations and participation on benefits obtained were high. Then comparison on the analysis of the differences on characteristics in terms of gender age educational level marital status work position and work tenure disclosed 0.05 statistic significance.

The objectives of this research were (1) To study the influence of supervisor’s transformational leadership and organizational justice on job satisfaction of employees of BAAC head office; (2) To study the influence of supervisor’s transformational leadership organizational justice and job satisfaction on organizational commitment of employees of BAAC head office. (3) To validate the causal relationship model of supervisor’s transformational leadership and organizational justice on job satisfaction and the organizational commitment of employees of BAAC head office with empirical data. The variables in this investigation consisted of the following: supervisor’s transformational leadership and organizational justice consist as the independent variables; job satisfaction as mediating variable; and organizational commitment as dependent variable. The researcher used quantitative methods which involved empirical research. The instrument of research was a questionnaire used to collect data from 399 employees from BAAC head office. The statistics used in data analysis were frequency mean percentage and structural equation model analysis. It was found that the model was consistent with the empirical data. Goodness of fit measures were found to be Chi-square (2) = 122.230; Degree of freedom = 150; p-value = 0.952; Relative Chi-square (2/df) = 0.815; Goodness of Fit Index (GFI) = 0.980; Adjusted Goodness of Fit Index (AGFI) = 0.938; Comparative Fit Index (CFI) = 1.000; Standardized Root Mean Square Residual (SRMR) = 0.020 and Root Mean Square Error of Approximation (RMSEA) = 0.000. It was also found that: 1. Supervisor’s transformational leadership had positive and direct influence on employee’s job satisfaction. 2. Supervisor’s transformational leadership had positive and direct influence on organizational commitment. 3. Organizational justice in the dimension of distributive justice had positive and direct influence on job satisfaction. 4. Organizational justice in the dimension procedural justice had positive and direct influence on job satisfaction. 5. Organizational justice in the dimension of distributive justice had positive and direct influence on organizational commitment. 6. Job satisfaction had positive and direct influence on organizational commitment. Based on these findings the researcher recommends that BAAC head office more fully focus on supervisor’s transformational leadership organizational justice in the dimensions of distributive justice and procedural justice to deepen the job satisfaction and organizational commitment.

The objective of this research were (1) To study the Influence of supervisor’s transformation leadership on job satisfaction; (2) To study the Influence of supervisor’s transformation leadership and job satisfaction on organizational commitment; (3) To study The Influence of transformation leadership job satisfaction and organizational commitment on employee’s job performance (4) To validate a causal relationship model of influence of supervisor’s transformation leadership on job satisfaction organizational commitment and employee’s job performance of Tisco Bank Public Company Limited. The variables in this investigation consisted of the following; supervisor’s transformation leadership as the independent variable; and job satisfaction on organizational commitment as mediating variables and employee’s job performance as dependent variable. The researcher used quantitative methods which involved empirical research. The instrument of research was a questionnaire used to collect data form 345 personnel of Tisco Bank Public Company Limited. The statistics used in data analysis were frequency mean percentage and structural equation model analysis. It was found that the model was consistent with the empirical data. Goodnessof fit measures were found to be Chi-square (2) = 198.935; Degree of freedom = 169; p–value = 0.057; Relative Chi-square (2/ df) = 1.177; Goodness of Fit Index (GFI) = 0.950; Adjusted Goodness of Fit Index ( AGFI) = 0.925; Comparative Fit Index (CFI) = 0.997; Standardized Root Mean Square Residual (SRMR) = 0.039; and root Mean Square Error of Approximation (RMSEA) = 0.023. It was also found that (1) supervisor’s transformation leadership had a positive direct effect on job satisfaction; (2) supervisor’s transformation leadership had a positive direct effect on organizational commitment; (3) job satisfaction had a positive direct effect on organizational commitment; (4) organizational commitment had a positive direct effect on employee’s job performance; and (5) supervisor’s transformation leadership had a positive direct effect on employee’s job performance. On the basis these findings the researcher recommends that Tisco Bank Public Company Limited more fully focus on transformation leadership to deepen job satisfaction and organizational commitment and employee’s job performance.

TThe objective of this independent study was to compare the opinions of The Government Pharmaceutical Organization employees’ towards the waste management within the organization. The participants were classified by personal characteristics of The Government Pharmaceutical Organization employees; and the research instrument used was a questionnaire. The research data applied the statistics included percentage frequency average standard deviation. The research hypotheses were tested by independent sample t-test. One Way ANOVA (F-test) was applied to verify two variables while Scheffe was used to test the research hypotheses among more than two groups of variables. The results of the study revealed as follows. 1. Most of the personnel were males aged between 31-40 years old holding Bachelor’s degrees in the area of production process with 5 to 10 years working experience. 2. Their opinions towards the waste management within the organization were found that the overall picture was rated in the high level in every aspect arranging from the average values of the highest to lowest namely Reuse Recycle and Reduce aspects respectively. 3. The results of the hypothesis testing revealed that the sample personnel of different genders have dissimilar opinions on the waste management within The Government Pharmaceutical Organization on the in the Reuse Recycle and Reduce ง aspects areas with statistical significance at the level of 0.05 and their different educational levels resulted in dissimilar ideas on the waste management within the organization regarding the Reduce aspect at statistical significant at the level of 0.05.