The deadline is a tricky instrument of negotiation. On the one hand, it is hard to reach an agreement on important issues without setting up some deadlines, but on the other, the deadline can foster unprepared agreements. Obviously, the deadline should work for negotiating parties but not vice-versa. But to do so negotiators should spend time negotiating deadlines. In other words, before putting any deadline, the sides have to reach an agreement on deadline policies and implementations. However, beforehand they have to negotiate on the possibility of deadline negotiation.