https://en.m.wikipedia.org/wiki/North_America%27s_Building_Trades_Unions

The Building and Construction Trades Department, commonly known as North America's Building Trades Unions (NABTU), is a trade department of the American Federation of Labor and Congress of Industrial Organizations (AFL–CIO) with 14 affiliated labor unions in the building trades. It was originally founded by the American Federation of Labor in 1907.

Abbreviation
NABTU
Formation
November 11, 1907; 116 years ago
Type
Trade department of a trade union center
Headquarters
Washington, DC, US
Location
United StatesCanada

Membership (2018)
14 affiliated unions[1]
President
Sean McGarvey[2]
Parent organization
AFL–CIO
Website
nabtu.org
Formerly called
Department of Building Trades

The federation was formed on 1 November 2006 out of the merger of the International Confederation of Free Trade Unions (ICFTU) and the World Confederation of Labour (WCL). The Founding Congress of the ITUC was held in Vienna and was preceded by the dissolution congresses of both the ICFTU and the WCL. The ITUC has three main regional organizations: the Asia-Pacific Regional Organization, the Trade Union Confederation of the Americas, and the African Regional Organisation.[2] The Trade Union Development Cooperation Network (TUDCN) is an initiative of the ITUC whose main objective is to bring the trade union perspective into international development policy debates and improve the coordination and effectiveness of trade union development cooperation activities.[3]
The ITUC represents 207 million workers through its 331 affiliated organizations within 163 countries and territories.[4] Luc Triangle is the current acting General Secretary.[5]

https://en.m.wikipedia.org/wiki/International_Trade_Union_Confederation

https://en.m.wikipedia.org/wiki/List_of_federations_of_trade_unions

This is a list of federations of trade unions currently in existence. Those federations listed under each country are also known as national trade union centres and are organizations formed by trade unions which operate, in most cases, at the national level. The organizations listed in the worldwide section are industry/sectoral-specific (i.e. the GUFs) and international organizations representing national trade union centres (e.g. ITUC).

The World Federation of Trade Unions (WFTU) is an international federation of trade unions established in 1945. Founded in the immediate aftermath of World War Two, the organization built on the pre-war legacy of the International Federation of Trade Unions as a single structure for trade unions world-wide, following the World Trade Union Conference in London, United Kingdom.[2]

https://en.m.wikipedia.org/wiki/World_Federation_of_Trade_Unions