How Long Do You Have to File a Grievance? What Unionized Workers Need to Know

The clock starts before you feel ready. A denied overtime sits for two weeks while you “wait to see if they fix it.” A discipline letter stays in a locker because you want the whole story first. Then you talk to the steward — and the first question is not what happened. It is when.

In a Canadian union workplace, grievance time limits live in the collective agreement, not in a provincial default that applies to every shop. Some books give you five days. Some give you ten, fifteen, or thirty. Some count working days. Some count calendar days. Some start the clock on the day of the event. Some start it when you knew, or ought to have known. Read the clause. Do not guess from a co-worker’s last local.

The clock is not a suggestion

Employers love a late grievance. A preliminary objection on time can kill a case before anyone argues the facts. Arbitrators hear those motions first. If the grievance is untimely and the union cannot explain the delay, the member can lose a good case on a technicality. That is not fair. It is how the procedure is written.

Time limits exist so both sides know when a dispute is alive. They also exist so evidence does not rot. Memories fade. Cameras overwrite. Supervisors move. The longer you wait, the easier it is for the employer to say the union abandoned the issue.

When the clock actually starts

One-time events are cleaner. The posting closed on Tuesday. The letter landed on Thursday. The overtime list went up Friday. Count from that date unless the agreement says otherwise.

Continuing problems are messier. A policy that keeps being applied, a schedule that keeps being written wrong, a classification that keeps being ignored — those can refresh the clock each time the breach happens. Do not use that as an excuse to sit on the first one. File the first one you can prove. Keep the paper for the rest.

Discipline has its own rhythm. The date on the letter matters. So does the date you were told. If they walked you off the property and the paper came later, write both dates down and bring them to the steward the same shift if you can. Just cause still has to be proven — but only if you are still inside the procedure.

Late is not always dead

In Ontario, section 48(16) of the Labour Relations Act gives an arbitrator the power to extend a time limit where there are reasonable grounds and the other party is not substantially prejudiced — unless the agreement says that subsection does not apply. Other provinces have similar backstops with different wording. The ministry’s grievance-arbitration page is the government overview. Relief is not a plan. It is a last argument.

What you do this week

• Open the grievance procedure. Highlight the days, the type of days, and the trigger.
• If you think something is grievable, talk to your steward before the limit expires — even if you only have dates, a letter, and a half-built story.
• The union can file with the particulars it has and keep investigating. Time limits do not wait for the whole story.
• Write the date of the event at the top of your notes. Write the date you first knew. Bring the paper.
• Ask one question out loud: “Are we still inside the limit?” If the answer is tight, file. Then build.

So: how long do you have to file a grievance? Whatever your book says — often a handful of working days from when you knew or ought to have known. Count them. Do not wait until you feel ready.