This study aims to determine and analyze the influence of work motivation, organizational culture, and career development either partially or simultaneously on employee performance at PT Titis Sampurna Inspection. The research used quantitative analysis approach, with data collection method through the questionnaire was given to 100 respondents from the total population of 133 employees. The method for data analysis in this study using multiple linear regression analysis. Results of research show that the work motivation, organizational culture, and career development have a positive and significant impact on employee performance, either partially or simultaneously. The result of the research also shows that there is a quite strong correlation between the dimension of social requirement on the variable of work motivation with the dimension of job quality on the variable of employee performance, then between the dimension of person orientation in the variable of organizational culture with the dimension of cooperation ability on the variable of employee performance also have correlation is quite strong , there is also a quite strong correlation between the dimension of mentor and support in the variabel of career development with the dimensions of cooperation ability in the variable of employee performance.