Collective agreement coverage or union representation refers to the proportion of people in a country population whose terms and conditions at work are made by collective bargaining, between an employer and a trade union, rather than by individual contracts. This is invariably higher than the union membership rate, because collective agreements almost always protect non-members in a unionised workplace. This means that, rather than individuals who have weaker bargaining power representing themselves in negotiations, people organise to represent each other together when negotiating for better pay and conditions in their workplace. The number of people who are covered by collective agreements is higher than the number of union members (or the "union density" rate), and in many cases substant