Most Federal, State and Local Government Employees work under some form of Civil Service Agreement that gives them a high-degree of job security (as long as they pass tests and follow rules). However, Government Unions are becoming more prominent to negotiate wages and work rules with Governments on behalf of their Membership (Collective Bargaining). The Unions have focused on many critical infrastructure jobs in Government, including: Police, Fire, EMT, Sanitation, Maintenance, Education, Health Care and Information Technology. Many Unions exert significant control over the Government Agencies. For example, Teachers Unions today have a major influence on opening schools and deciding what curriculum is taught.