This research was aimed to analyze work performance classified by personal information to investigate internal factors of support personnel work performance and influence of internal factors affecting work performance of the support personnel at Rajamangala University of Technology Phra Nakhon. The population used in this study was 693 staff working at Rajamangala University of Technology Phra Nakhon Bangkok. The sample size was determined by Craig and Morgan method to draw out 250 samples. The research instrument was a questionnaire constructed by the researcher to collect data manually. The data obtained from the questionnaire were analyzed using percentage mean standard deviation and T-test F-test ANOVA Pearson coefficient and multiple regression analysis. The research revealed the results as follows. Work performance of the support personnel of Rajamangala University of Technology Phra Nakhon in the overall was at high level with the mean Organization factors of the support personnel of Rajamangala University of Technology Phra Nakhon in the overall was at high level with the The results of the study on personal factors agreed with the overall performance of Rajamangala University of Technology Phra Nakhon personnel. It was found that the status salary and educationhours and working centers were significantly different .

The purposes of the research were to study satisfaction and expectation level and to compare satisfaction and expectation of enterprises toward the communication skills of undergraduate students of Rajamangala University of Technology Phra Nakhon. The random sample consisted of 145 enterprises. The tool used in this research was a questionnaire. The data were analyzed by a percentage means and independent samples t-test. The result revealed that the level of satisfaction and expectation of enterprises toward the communication skills of the undergraduates was highly rated at 3.71 and 4.30 respectively. Concerning the satisfaction the use of polite spoken language with other people time and situation reached the highest level (4.06) but the lowest level (3.26) was the correct pronunciation of words. In addition although there was a significant difference in the employers’ sex their expectation was not different except the satisfaction.

This research is an exploring research to be connected with the main purpose of learning about the satisfactions in working as other sides for supporting personal consists of supporting for government officers supporting for government staffs university staffs permanent employees and temporary employees in total 635 people. There are only 360 people of samples from the total as mentioned to be analyzed the factors and other satisfactions the result of this research is the level of surrounding factors in working as showing the average rate for all over as the normal level. In comparing with the personal factor and satisfaction were found that Male are much more than Female about satisfaction in all factors mentioned. And also single government staff there is most of satisfying than married and divorced status. Additionally the level of satisfaction will be reduced respectively as referring with ages type of working opportunity colleague and facilities but the satisfaction of reward will be much more which is depended on ages. Moreover the experienced staff will be much satisfied as follows: Type of working Reward Opportunity and Facilities but another side to be less satisfied are Colleague. However the responsibility of members in their family will be less satisfied almost all sides. Another thing the position is the most of satisfying colleague & facilities are next and reward & opportunity to be promoted as the last one. Moreover chief executive position satisfies more than head of department and operation respectively. Noise temperature dust smell air flow and colleague are the surrounding factors to be reflected with the satisfactions.