This research is quantitative research (research Quantity) objective to 1) recognize level of perceived organizational support. Organizational Commitment Tedium of working And the willingness of staff resigned Mill Con Steel Co., Ltd. (Thailand). 2) Causal relationship modeling of cognitive support from the Organization's regional engagement eventually tired of working and the resignation of the employee service companies mill con steel PLC 3) Checking consistency between models based on assumptions with complex information seemed. Contains a sample of the population, which is the employee service companies mill con steel limited all 249. People use a query with the value of confidence between .791-.974 is a tool to collect information and analyze data using complex statistical analysis and model description structural equation with Amos18.