<prompt> Human: My previous employer just paid me an extra paycheck on 0728. My pay statement said I worked 0 hours but paid me for a full salary check including my mid year raise which would just have gone through.I stopped working on 0707 and my last paycheck on 0715 including my last weeks pay, overtime pay from the previous pay period, and vacation time paid out. I do not plan to spend the money as Im pretty sure this is a mistake, Ive read other similar posts talking about this issue, but my question is: If my company uses ADP for payroll, will ADP be responsible for the money lost repay the company or will I have to ultimately pay this back? Just trying to identify if any circumstance exists legally that I would be able to keep the pay  <response>: Payroll supervisor here - its probably not a mistake. Most employers pay in arrears - meaning theyre two weeks behind in salary payments. Payroll is VERY closely monitored and doubletriple checked. I would contact your payroll department, but I would say its probably OK. 