Number of hours can also be misleading. I work 40 hours a week at one job. Someone who worked 40 hours a week at three jobs would certainly have more difficulti

Number of hours can also be misleading. I work 40 hours a week at one job. Someone who worked 40 hours a week at three jobs would certainly have more difficulties at work, like more commutes, more context switching, not having the benefits that arise from a full time job, etc.