Microsoft has allegedly sent out a notice to former employees (those who were recently laid off) to come back so they can pour a little bit of salt in their wounds. Apparently, human resources in Redmond made a little oopsie and overpaid severance for some ex-workers. According to the notice, the folks in question have two weeks to send a check or money order back to Microsoft to cover the overage. The error may have also caused underpayment of severance for other former employees. This isn’t shaping up so well for Microsoft and for those who are being forced to send in payments to correct an HR error. Imagine receiving news of your impending layoff and then being sent packing with your check, only to receive a notice later that effectively reads, “Our bad. Send some of that money back, please.” No official word from Microsoft as to when the error occurred and why.