Trade Unions exist to represent the interests of employees in their closed shopcollective bargainingcraft uniongeneral unionmotivatingnegotiationsproductivitysingle unionwagesWhite collar union with the employers on closed shopcollective bargainingcraft uniongeneral unionmotivatingnegotiationsproductivitysingle unionwagesWhite collar union, working hours, holidays and conditions of work. The process of workers combining together to negotiate with employers is known as closed shopcollective bargainingcraft uniongeneral unionmotivatingnegotiationsproductivitysingle unionwagesWhite collar union. There are different types of trade unions. A closed shopcollective bargainingcraft uniongeneral unionmotivatingnegotiationsproductivitysingle unionwagesWhite collar union is a trade union which represents a particular type of skilled worker. A closed shopcollective bargainingcraft uniongeneral unionmotivatingnegotiationsproductivitysingle unionwagesWhite collar union represents workers from a variety of trade and industry. Office workers, management and professional people are represented by a closed shopcollective bargainingcraft uniongeneral unionmotivatingnegotiationsproductivitysingle unionwagesWhite collar union. Some businesses make it compulsory for their employees to become a member of a particular trade union. This is known as closed shopcollective bargainingcraft uniongeneral unionmotivatingnegotiationsproductivitysingle unionwagesWhite collar union. in order to avoid friction between different trade unions in the same firm, the management may decide to deal with only one trade union and no other. This is known as a closed shopcollective bargainingcraft uniongeneral unionmotivatingnegotiationsproductivitysingle unionwagesWhite collar union agreement. Sometimes the management will link increases in pay to increase in productivity as a way of closed shopcollective bargainingcraft uniongeneral unionmotivatingnegotiationsproductivitysingle unionwagesWhite collar union the workers to work harder. These are called closed shopcollective bargainingcraft uniongeneral unionmotivatingnegotiationsproductivitysingle unionwagesWhite collar union agreements.