The faculty union's contract with the City University of New York has a provision designed to prevent part-time instructors from being given a full-time teaching load. These adjuncts are allowed to teach only nine credits a semester at any one college in CUNY (typically three courses) and one other course at a second CUNY college. If a department head wants to offer an adjunct any additional work, say a section at a third college or a fourth section at the primary college, the union must approve a waiver. And until recently, the union has generally done so.