Break out the Alka $eltzer: Westchester County taxpayers will soon be facing an overtime hangover. In 2008 they footed the bill for more than $27 million in OT for County employees—and according to experts will have to shell out much more than that once those figures are used to calculate future pension levels. Seven of the county’s top-10 earners collectively raked in more than a half-million in OT—including one county employee who doubled his base salary. (And you were feeling guilty about that hour of OT you clocked last Friday?)