A Trade Union is an amalgamation of workers, labour as well as employees to accomplish their demands for getting better working conditions at the premises of a business firm. They are also known as Labour Union in the United States. It is an organization of employees to fulfill all the needs of different levels of employees to achieve objectives in their fields such as wages or salary and working conditions in a business firm.
This union is established to tackle various problems of labourers and the nature of problems varies such as unfair rules for working, unlimited working hours, and various concerns about the pay. Workers Union is the representation of all the employees who are working under an employer. Through the union, all the communications between the employee’s demand and the employer take place. These unions maintain discipline and also establish better relations between the management and workers and on the other side, trade unions take disciplinary actions against the misbehaving workers and also, maintain peace and harmony at the job place.
Trade Union is set up to fulfill and achieve some of the objectives related to the workforce and the management of an organization. Here, we have jotted down some of the objectives that main engender behind this establishment. Let us have a look.
Innumerous functions are performed by the Trade Union in order to accomplish the objectives as it is indispensable. These functions are segregated into three categories which are given as follows:
a. Welfare activities: It improves the quality of work-life which includes mutual fund, cooperative societies for housing, cooperative stores, cultural programs, banking and medical facilities and also provide proper training to women in various crafts.
b. Education: Educate the workers related to all the aspects which comprise of improving the civic life, environment awareness, enhance their knowledge related to working and also teach them their responsibilities and participation of worker in the management.
c. Redressing their grievances: Few Trade Union also assisting the governmental authorities to implement various working education scheme.
4. Political functions : This function is associated with getting the affiliation from the political party an assisting them in enrolling more and more members, in return the political parties helping the trade union during the time of strikes and lockouts.
Also See: Scope of Human Resource Management: Complete Reference
Several types of a trade union are there that serves different sort of workers. Here, we have jotted down the trade unions into three categories as given below.

According to the ideology, a labour union is segregated into three parts which are named as revolutionary unions, reformist or welfare unions and uplift unions which are as discussed below.
a. Revolutionary Unions: This type of union is related to believe in the transformation of the social as well as economic order and create some new one. Moreover, it may lead to change the authority and power.
b. Reformist or Welfare Unions: It is associated with the change and reforms in the field of working conditions within the current framework of the socio-economic and socio-political European model.
c. Uplift Unions: Beyond the area of working conditions, it is attached with the extensive reforms such as making changes in the taxation system, eliminate the poverty and so on.
Few unions have some memberships as well as jurisdictions on the basis of their trades that they indicate. Craft Union is the narrow membership and includes the workers who are certified in certain trade or craft such as pipe fitting, clerical work, carpentry and so on. But these unions are less common in India and Sri Lanka and common in another western world.
At the next extreme, there is a general union that represents workers from all sort of industries and companies. There are two general worker categories under trade union which is known as blue-collar workers such as workers on the production floor, construction work, etc. and white-collar workers like management staff and clerical staff.
Another type of trade union is classified on the basis of agreement and based on the level to which the condition of employment is the membership. Some heads are given below that considered under this kind of trade union.
a. Closed Shop: The closed shop refers to the agreement between the management and the union that recruitment of the workers is done by the trade union. An employee becomes part of the shop when they enjoy the trade union.
b. Union Shop: It includes a fixed period of time under which a worker must join the trade union after employment and it is a kind of agreement which is known as a union shop.
c. Preferential Shop:It is related to giving the preference to a member. This agreement is associated with giving more preference to the worker while filling up the vacancies which are called as Preferential Shop.
d. Maintenance Shop:In this type of shop, there is no such compulsory membership in the union, not before and after the recruitment. But, if the worker wants to become a member of a trade union, then it is mandatory in such cases to remain the member during the employment tenure of the employee. This is also known as a membership shop.
e. Agency Shop:It is a kind of payment union. However, it is a sort of agreement between the management and the union, if a non-union member wants to become a member of the trade union, then they have to pay a definite sum of money to the union trade as a member’s subscription in order to continue employment with the employer.
f. Open Shop:In such an agreement between the union and the management, it is not compulsory or mandatory to become a member of trade union either before or after recruitment
Overall, the Trade Union in HRM is related to the survival strategy to deal with all sorts of economic, social and working cultures in an organization. It ensures that not even a single aspiration and interest of workers have been neglected.