The time bank is an extraordinarily valuable tool for team management: it allows for absorbing work peaks without the need for excessive hiring and, at the same time, offers flexibility that is highly appreciated by staff. However, when its design is poor, it can quickly turn into a constant source of friction: accumulated hours that are never enjoyed, confusing rules, and a palpable sense of unfairness. It is clear that good management and design are crucial, regardless of the name we give it.