Got a pay raise after the initial 30 day probation period. I'm an extremely valuable cook to this restaurant (Exec and GM love me), but I only work 3 days a week (albeit weekends). For special high volume events e.g. basketball games at the 18k capacity arena two blocks away (we're the closest restaurant to the arena), I'm the must-have guy on the line. I open on weekends, but I regularly stay way past my scheduled time to help out when needed (which is most days). Been working here since May 2014. Can I ask for a raise now or should I wait a little bit longer?