Trade unions are an association of all those workers who are looking for better conditions in their workplace and who are willing to fight to achieve their goals. The union is financially independent. Membership paid by workers is used to pay those who work in unions and provide legal assistance as well as assistance to union members. The unions fight for the rights of their members every day, and they managed to fight for excellent results such as: working hours, paid sick leave, health insurance, paid overtime hours, transportation costs, holiday pay, vacation and other rights for their members. The paper presents a SWOT analysis of trade unions and which types of trade unions exist. The difference between the different systems of labor relations of all countries is shown. Collective bargaining can be described as a process that involves a meeting of a union and an employer for the purpose of negotiating an employment contract. At that meeting, they negotiate wages, employment conditions, working hours, etc. Trade union representatives and employers must be well prepared to negotiate. Employers' representatives will make sure that they have all the necessary information ready, such as information on wages, benefits, overtime costs and information on the division of labor by gender, employment, etc. In resolving the stalemate between the employer and the union, we come to conciliation, arbitration and strikes, which are explained in the paper. At the end, there is a written conclusion and literature that has been used.