Is it one hour of overtime? I thought it was two?
I find the active careers a bit confusing, as once you have gold on all the tasks, I don't notice the performance bar change at all, but I keep doing tasks anyway. Then I will get promoted at the end of the shift even though the performance bar hasn't reached full. I also read that other things increase performance, like having a good relationship with coworkers in the science career increases performance, or diagnosing patients in the doctor career. I also noticed that outside of work, my doctor gets a performance increase when using her computer and doing whatever that task is that is work related, something like add new findings to medical journal. The doctor also has the option of "give medical advice" to other sims, not sure if that increases work performance. I just kind of find it confusing as my scientists performance bar wasn't moving even when I kept doing tasks etc, this went on for a couole of days, then she finished all her tasks so she chatted to coworkers to improve relationships and she then got promoted.