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.