Trade union
A trade union, trades union (British English
British English
British English, or English , is the broad term used to distinguish the forms of the English language used in the United Kingdom from forms used elsewhere...

) or labor union (American English
American English
American English is a set of dialects of the English language used mostly in the United States. Approximately two-thirds of the world's native speakers of English live in the United States....

) is an organization of workers that have banded together to achieve common goals such as better working conditions. The trade union, through its leadership, bargains with the employer on behalf of union members (rank and file members) and negotiates labour contracts
Labour and employment law
Labour law is the body of laws, administrative rulings, and precedents which address the legal rights of, and restrictions on, working people and their organizations. As such, it mediates many aspects of the relationship between trade unions, employers and employees...

 (collective bargaining
Collective bargaining
Collective bargaining is a process of negotiations between employers and the representatives of a unit of employees aimed at reaching agreements that regulate working conditions...

) with employers. This may include the negotiation of wage
A wage is a compensation, usually financial, received by workers in exchange for their labor.Compensation in terms of wages is given to workers and compensation in terms of salary is given to employees...

s, work rules, complaint procedures, rules governing hiring, firing and promotion of workers, benefits, workplace safety
Workplace safety
Workplace safety & health is a category of management responsibility in places of employment.To ensure the safety and health of workers, managers establish a focus on safety that can include elements such as:* management leadership and commitment...

 and policies.

1648    Boston Shoemakers form first U.S. labor organization.

1834    US President Andrew Jackson orders first use of federal soldiers to suppress a labor dispute.

1834    Six farm labourers from Tolpuddle, Dorset, England are sentenced to be transported to Australia for forming a trade union.

1872    Trade unions are legalised in Canada.

1892    The New Orleans general strike begins, uniting black and white American trade unionists in a successful four-day general strike action for the first time.

1925    The All-China Federation of Trade Unions is officially founded. Today it is the largest trade union in the world, with 134 million members.

1926    UK General Strike 1926: In the United Kingdom, a nine-day general strike by trade unions ends.

1931    Ådalen shootings: five people are killed in Ådalen, Sweden, as soldiers open fire on an unarmed trade union demonstration.

1933    ''Gleichschaltung'': Adolf Hitler bans trade unions.

1936    The Steel Workers Organizing Committee, a trade union, is founded in Pittsburgh, Pennsylvania. Philip Murray is elected its first president.