Q. We have an add-on to wages of $100 if an employee who’s not scheduled to work gets called in within 72 hours. The employee gets paid for the hours worked at his normal wages, with time and a half if it adds up to overtime. The $100 is then added for the hours worked, and taxes are calculated on these earnings as usual. Is this a legal way of rewarding employees for coming in on short notice? –J.S., Oklahoma