1900: First railway union locals formed in Calgary

1900: Head tax organization

1901: Track maintenance workers, members of Brotherhood Of Railway and Track, strike in Calgary

1902: United Brotherhood of Carpenters and Joiners of America form local in Frank, Alberta
– International Typographical Union organizes local in Calgary
– Organization of Edmonton construction unions begins in earnest when the United Brotherhood of Carpenters and Joiners provides a charter to Local 1325 in Edmonton. Local 1325 operates to the present day, making it the senior construction local in Alberta.

1903: United Brotherhood of Railway Employees strike in Calgary
– Construction workers strike in Calgary

1903: WFM recognition strike in Crowsnest Pass (Noble Cause 34)
– District 18 United Mineworkers formed; Frank Sherman elected President (Noble 34)

1904: Plumbers and Pipefitters Local 488, later to become Canada’s largest local of plumbers and pipefitters, has its humble beginnings as seven plumbers and pipefitters receive a charter from the international union.
– Socialist Party of Canada founded (track Alberta branch – Noble Cause 34)

1905: Local labour councils are formed in Lethbridge and Medicine Hat

1905: The Canadian Northern transcontinental completed in Edmonton, and railway brotherhoods began organizing in the city.
– Series of UMWA recognition strikes begins in Lethbridge, Frank, Bankhead, etc. (Noble Cause 76)

1906: The Edmonton Trades and Labour Council, created three years earlier, receives a charter from the American Federation of Labor.

1906: Building trades unions form central council in Calgary
– Trades and Labour Council formed in Edmonton
– Seven month strike of miners in Lethbridge and surrounding communities gives rise to the Industrial Disputes Investigation Act

1907: United Mine Workers of America makes first of many futile attempts to organize Edmonton miners in the face of well-organized employer opposition to union mines

1907: Socialist Party of Alberta founded in Calgary, Dec. 14 (Robin 89-90)

1908: Alberta enacts its first Workers’ Compensation Act to move compensation of injury away from a basis in tort law

1909: Socialist Charley O’Brien is elected Member of the Alberta Legislature to represent the Crowsnest Pass
– First Closed Shop won at Crowsnest Pass Company mines by UMWA
– United Farmers of Alberta formed (Noble Cause 116)