Courtesy of QuadientIn October, Meta fired around two dozen employees found to be misusing a Grubhub meal perk.An employee perk management expert shares four ways employees may not realize they're abusing perks.She says that abusing perks could come at a cost for the company and negatively impact employees.This as-told-to essay is based on a conversation with Sarah-Jayne Martin, a Chicago-based expert in financial operations and employee perk management at Quadient.