Purpose: In this study. a mixed-integer programming model is developed to minimize the total lateness and total completion time of the jobs in an automotive company. In order to respond rapidly to the continuous customer demand through the production. the work schedule of engineers in the research and development department is considered flexibly. https://www.bekindtopets.com/bargain-Taters-Over-Haters-Comfort-Colors-Adult-Ring-Spun-Cotton-Tee-best-find/