The Ontario Labour Relations Board publishes a bi-monthly collection of their significant decisions. The OLRB Reports are one of the oldest reporting series for labour adjudication in North America. In addition to full text decisions, the OLRB Reports also provide the results of judicial reviews of Board decisions, other court applications relating to the Board, and a listing of all cases disposed of by the Board during the bi-monthly period including bargaining unit sizes and vote results.
You can subscribe to the OLRB Reports here: https://www.olrb.gov.on.ca/OLRBReportsRequest-EN.asp
Historical copies of the OLRB Reports dating back to 1944 continue to be available at the Ontario Workplace Tribunals Library.