I am currently receiving SSDI. I am starting a part-time job and I want to limit my income below $880/month so as to not have it count as one of my 9 TWP months. Here's my question: I will be paid every two weeks. In some months, there will be 3 paychecks. Does SSA consider the month the work was performed or the month when I get paid when calculating whether I have exceeded the $880 limit?