Objective: The research objective was to evaluate the effectiveness of virtual in-service training of the employees of Gachsaran Oil and Gas Company. Accordingly, among the available models, the Kirk Patrick effectiveness evaluation model was used in four behavioral, learning, reaction, and outcomes dimensions. Methodology: The research method was survey and its population included 302 employees of Gachsaran Oil and Gas Company. They were selected by using random sampling method and they were interviewed using a structured questionnaire. The collected data were analyzed in SPSS 22 software and the results were reported at two levels of descriptive and inferential statistics. Results: the research results suggest that virtual in-service training of employees of Gachsaran Oil and Gas Company was significantly effective (sig = 0.000) at all three dimensions of employee learning, working behavior of employees, and outcomes. However, the effect of these trainings on the reaction level of employees compared to training courses was not significant. The level of response refers to the satisfaction of the employees of the training courses, and this suggests that some actions are needed to be made in holding the training courses in the company to improve the level of employees’ satisfaction of virtual trainings.
