The primary objective of a trade union is to represent and advocate for the rights and interests of its members, including issues such as wages, benefits, working conditions, and job security.

The Haymarket Riot, which occurred in Chicago in 1886, is often seen as the catalyst for the modern labor movement in the United States. The incident involved a labor protest that turned violent, resulting in the deaths of several workers and police officers.

Collective bargaining is the process through which representatives of workers (usually a union) and management negotiate an agreement that sets the terms and conditions of employment, such as wages, benefits, and working conditions.

The primary role of a labor mediator is to facilitate communication and help resolve disputes between labor and management. They act as neutral third parties to help both sides reach an agreement.

Franklin D. Roosevelt signed the National Labor Relations Act (NLRA) in 1935, also known as the Wagner Act. This landmark legislation established the right of workers to organize and bargain collectively, and it played a significant role in shaping labor relations in the United States.

A strike is a work stoppage organized by workers to demand better working conditions or benefits. Workers collectively refuse to work until their demands are met.

A lockout is a situation where an employer refuses to allow workers to enter the workplace during a labor dispute. This is a tactic used by employers to pressure workers into accepting their terms.

A boycott is a refusal to buy or use goods or services from a particular company or organization as a form of protest. This is often used to pressure the company to change its policies or practices.

Picketing is a form of protest where workers stand outside a workplace during a labor dispute, carrying signs and chanting slogans to raise awareness and gain public support for their cause.

Arbitration is a formal process for resolving labor disputes through the intervention of a neutral third party, known as an arbitrator. The arbitrator hears evidence from both sides and makes a binding decision.

Mediation is a less formal process for resolving labor disputes through the intervention of a neutral third party, known as a mediator. The mediator helps facilitate communication between labor and management to help them reach an agreement.

Conciliation is a process where a neutral third party makes recommendations for resolving a labor dispute, but the recommendations are not binding on either side. The conciliator attempts to help labor and management reach an agreement, but the final decision rests with the parties involved.

Sympathy action is a situation where workers refuse to handle goods or perform services for a particular employer or industry as a form of protest in support of another group of workers who are engaged in a labor dispute.

Work-to-rule is a situation where workers refuse to work overtime or perform certain tasks as a form of protest. They strictly follow the rules and regulations of their job, which can slow down productivity and disrupt operations.

A sit-in is a situation where workers occupy their workplace and refuse to leave as a form of protest. They remain on the premises, often refusing to work, in an attempt to draw attention to their demands.