[1991] 2 S.C.R. 211
Facta
| Date | Document |
| 1990/01/05 | Appellant – Francis Edmund Mervyn Lavigne |
| 1990/04/06 | Respondents – Ontario Federation of Labour and Canadian Labour Congress |
| 1990/04/06 | Respondent – Ontario Public Service Employees Union |
| 1990/04/12 | Respondent – Ontario Council of Regents for Colleges of Applied Arts and Technology |
| 1990/04/20 | Respondent – National Union of Provincial Government Employees |
| 1990/05/03 | Intervener – Attorney General of Ontario |
| 1990/05/30 | Intervener – Canadian Civil Liberties Association |
| 1990/06/18 | Intervener – Attorney General of Canada |
| 1990/06/13 | Intervener – Attorney General of Quebec |
| 1990/06/13 | Intervener – Confederation des Syndicats Nationaux |