National Industrial Union of the Dominion of Canada | |
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| Federation merger | Canadian Labour Congress |
|---|---|
| Founded | March 13, 1919 |
| Dissolved | 1956 |
| Headquarters | Winnipeg |
| Location | |
Members | 70,000 (1919) |
Key people | Robert B. Russell Roger Ernest Bray |
| Affiliations | Socialist Party of Canada |
The One Big Union (OBU) was a left-wing industrial union based primarily in Western Canada.[1] Launched formally in Calgary on June 4, 1919, the OBU, after a spectacular initial upsurge, lost most of its members within a few years. It finally merged with the Canadian Labour Congress in 1956.