If you're an employee at CUNY and you register for classes, you must still pay tuition. Depending on your pay grade and position, however, you may get a substantial discount. As an academic research professional, for example, some classes are only $45.00 to register. If you're a general admission counselor, most classes you have to pay the full rate of tuition. You're best off asking the HR department or even your supervisor/manager - they would be able to give you the best tuition reimbursement and discount rate for your grade.