<prompt> Human: At my internship this fall, I was paid for 40 hours a week no matter how long I worked normally 38-42 hours. When I finished in December, it appears that I was never taken off of the payroll. This resulted in me getting paid about 1200 for hours that I never worked. I recently received a letter from my old employer informing me of the error and asking me to send them a check for 1200 within the next month. While I agree that I should repay them this money morally right, want to keep good relationships, etc., do they have any grounds to pursue money given to me due to their mistake?Thank you for any help!  <response>: They can correct the mistake in court if thats what it takes.Since it happened in January, you should return the net amount minus all taxes, etc., not the gross amount. They can get back the taxes on their side. 