<prompt> Human: I am a recent hire at a major aerospace company in California. I received my 1st paycheck and noticed that it was approximately 25 higher than it was supposed to be. I thought maybe it was done to offset the taxes on the sign on bonus that was given since it was taxed at 40. However on this weeks paycheck, again the amount reflects about 25 more than was negotiated with HR when I accepted the offer. I know this is an unusual situation, but should I report this to my manager? The HR department is completely separate from the division I work for, and during the hiring process, the hiring manager offered me the job, then salary negotiation was between me and HR. Can the company retroactively recoup the money at a later date if it was discovered to be a mistake? Should I just keep my mouth shut and enjoy the extra as a bonus? Any insight is definitely appreciated.  <response>: Just tell them. Someone will notice and youll owe the money. Youre not entitled to extra money because there was an error. Do you think if there was an rror in the opposite direction you wouldnt be entitled to the correct pay? 