Collective bargaining coverage: a statistic that represents all of the employees, both union and non-union, covered by collective agreement as % of the labour force. It is always a larger number than union density because it excludes non union employees. Highly unionized- public sector employees are far more likely to get unionized than the private sector ones. Also an important part of the labour movement in canada, where they emerged as the largest unions in canada. The difference between all the sectors is the role of government. In the public sector, the government is both an arbitrator where they have to be neutral in the bargaining process and employer where they"re the party of the collective bargaining agreement. Public services are often offered in non-competitive markets. Services are provided by teachers, nurses, fighfighters and police officers. The public employees may also possess the power of monopsony, which include low wages and public goods.