Building Workers' Trade Union
The Building Workers' Trade Union (BWTU) was a trade union in Ireland.
The union was founded in 1942, with the aim of bringing together construction unions, in part due to the expectation that requirements of the Trade Union Act 1941 would mean only one union would be permitted to formally negotiate for the industry. It brought together seven unions:{{cite book |last1=Devine |first1=Francis |last2=Smethurst |first2=John B. |title=Historical Directory of Trade Unions in Ireland |date=2017 |publisher=Irish Labour History Society & Working Class Movement Library |location=Dublin |url=https://www.irishlabourhistorysociety.com/wp-content/uploads/2024/10/Historical-Directory-of-Trade-Unions-in-Ireland.pdf |access-date=23 January 2025}}
- Ancient Guild of Incorporated Brick Layers' Trade Union
- Irish National Painters' and Decorators' Trade Union
- Irish National Union of Woodworkers
- Limerick City Guild of Carpenters and Joiners
- Limerick Operative House Painters
- Stonecutters' Union of Ireland
- United Operative House and Ship Painters' and Decorators' Trade Union of Ireland
It initially affiliated to the Irish Trade Union Congress, but in 1945 joined the Congress of Irish Unions split. From 1959, it was affiliated to the new Irish Congress of Trade Unions. Membership peaked at 2,096 in 1950, but then fell as many of the affiliates left, until only the Brick Layers remained. In 1981, the union adopted the name of its sole affiliate, the Ancient Guild of Incorporated Brick Layers' Trade Union. In 1998, it merged with the National Union of Wood Workers and Wood Cutting Machinists, to form the Building and Allied Trades' Union.John B. Smethurst and Peter Carter, Historical Directory of Trade Unions, vol.6, p.17