Unionization Rights in Ontario
Reviewed by the Commoner Law Editorial Team. Sourced from Canadian federal statutes and official sources. Provincial information reflects each province's own legislation and court rulings. Written in plain language for general understanding — this is educational content, not legal advice. Our editorial standards
What is this right?
You have the legal right to join a union and take part in lawful union activities. Your employer cannot interfere with, dominate, or try to influence the formation of a union.
The Canada Industrial Relations Board (CIRB) handles union certification. To certify a union, the CIRB needs to see majority support from workers and typically processes applications within 30 days.
Once a union is certified, both your employer and the union must bargain in good faith. Unfair labour practices — like punishing workers for union activity — are illegal.
When does it apply?
- All federally regulated employees.
- Managers and people in confidential labour relations roles may be excluded from the bargaining unit, but they still cannot be punished for supporting a union.
What to Do If Your Canadian Employer Retaliates Against Union Activity
- If your employer retaliates against you, file an unfair labour practice complaint with the CIRB. Call 1-800-575-9696.
- Document any anti-union conduct by your employer — notes, emails, witness names.
- If your union isn't representing you fairly, you can file a duty of fair representation complaint with the CIRB.
What should you NOT do?
- Don't organize on company time or using company equipment — do it on your own time and with your own devices.
- Don't assume employer anti-union campaigns are legal. Threats, promises, or surveillance to discourage union activity are unfair labour practices.
- Don't sign documents renouncing your union rights — those are not enforceable.
- Don't confuse a legal strike with a wildcat walkout. A strike is only legal after the collective bargaining process has been followed and a strike vote is held.
How Ontario differs from federal law
Unionization in Ontario workplaces is governed by the Labour Relations Act, 1995 (LRA), administered by the Ontario Labour Relations Board (OLRB). The process differs from the federal system under the Canada Labour Code.
- Ontario uses a mandatory vote system for union certification. At least 40% of employees in the proposed bargaining unit must sign union membership cards, then a secret ballot vote is held. A majority of those who vote must vote in favour.
- The construction industry has special rules — card-check certification (without a vote) is still available if 55% or more of employees sign cards.
- The OLRB can certify a union without a vote as a remedy if the employer has committed serious unfair labour practices that made a fair vote impossible.
- Employers cannot interfere with union organizing, threaten workers, change working conditions to discourage unionization, or fire/discipline workers for union activity. These are unfair labour practices under section 70 of the LRA.
- Once certified, the union and employer must bargain in good faith. Ontario law gives workers the right to strike after the collective agreement expires and certain steps (including conciliation) are completed.
Additional Steps in Ontario
To start organizing, contact a union that represents your industry. To file an unfair labour practice complaint, apply to the Ontario Labour Relations Board (olrb.gov.on.ca). OLRB hearings are free and you can represent yourself, though many workers use a union representative or lawyer. The OLRB also handles applications for certification, decertification, and first collective agreement arbitration.
Relevant Law: Labour Relations Act, 1995, S.O. 1995, c. 1, Sched. A, ss. 7–8 (Certification), s. 70 (Unfair Labour Practices), s. 79 (First Agreement Arbitration)
Common Questions
When does unionization rights apply?
All federally regulated employees.Managers and people in confidential labour relations roles may be excluded from the bargaining unit, but they still cannot be punished for supporting a union.
What should I do if my Canadian employer is punishing me for trying to unionize?
If your employer retaliates against you, file an unfair labour practice complaint with the CIRB. Call 1-800-575-9696.Document any anti-union conduct by your employer — notes, emails, witness names.If your union isn't representing you fairly, you can file a duty of fair representation complaint with the CIRB.
What mistakes should I avoid with unionization rights?
Don't organize on company time or using company equipment — do it on your own time and with your own devices.Don't assume employer anti-union campaigns are legal. Threats, promises, or surveillance to discourage union activity are unfair labour practices.Don't sign documents renouncing your union rights — those are not enforceable.Don't confuse a legal strike with a wildcat walkout. A strike is only legal after the collective bargaining process has been followed and a strike vote is held.
Unionization Rights in other states
Same topic, different jurisdiction. Pick the one that applies to you.