A CLA is a labor contract between an employer and one or more unions and is common throughout continental Europe. Collective bargaining consists of the process of negotiation between representatives of a union and employers (represented by management, or in some countries by an employer organization) involving terms and conditions of employment, such as wages, hours of work, working conditions and grievance-procedures, and about the rights and responsibilities of trade unions. The parties often refer to the result of the negotiation as a collective bargaining agreement (CBA) or as a collective employment agreement (CEA). CLAs can be negotiated at a company, regional or national level. Staffing agencies in the Netherlands have their own Collective Labour Agreement, which applies to temporary staffing and which is administered by ABU, the Dutch staffing association. This term is mostly used in Western Europe.