When was the Ontario Labour Relations Board established and what is its role? OLRB was established in the 1940's through legislationsl Previously, the common law - through tort law - had made unionization very diicult, distinctly siding with His The Ontario Labour Relations Act mostly establishes processes eg for how a union gets certied, when work stoppages are legal, and how disputes during the term of the collective agreement get dealt with - rather than guaranteeing results (ie better terms of employment) The latter are achieved through collective bargaining and exercising the right to strike