Most Canadian provinces let construction companies set their own vacation schedules. Quebec does not. Twice a year, the Commission de la construction du Québec (CCQ) mandates that nearly all CCQ-covered construction activity stops at the same time, subject to limited emergency or specially authorized work. About 80% of Quebec's construction workforce disappears simultaneously.
If you have a construction contract with Quebec timelines, a payment schedule tied to construction milestones, or a subcontractor relationship crossing provincial lines, these shutdowns will move your deadlines whether you planned for them or not. The problem is that people outside Quebec often do not know the shutdowns exist until the site goes quiet and the schedule slips.
The two mandatory shutdowns
Summer shutdown (July)
The summer construction holiday runs for two full weeks, typically starting the third Sunday in July.
2026 dates: July 19 to August 1, 2026
This is the big one. Most CCQ-covered construction sites across Quebec close, though limited exceptions exist for certain civil engineering, roadwork, emergency, repair, and maintenance activities. Concrete pours stop. Inspections pause. If your milestone says "completion by July 31," you have effectively lost two weeks of working time for most project types.
Winter shutdown (December-January)
The winter construction holiday spans the Christmas and New Year period.
2026-2027 dates: December 20, 2026 to January 2, 2027
Combined with the federal statutory holidays (Christmas Day, Boxing Day, New Year's Day), this creates a stretch where almost nothing moves in Quebec construction.
2026 shutdown calendar at a glance
| Period | 2026 dates | What usually happens |
|---|---|---|
| Summer shutdown | July 19 to August 1, 2026 | Most CCQ-covered construction activity pauses across Quebec. Site labour, inspections, and milestone progress can stall at the same time. |
| Winter shutdown | December 20, 2026 to January 2, 2027 | Year-end construction activity slows sharply at the same time federal statutory holidays and general year-end closures hit. |
These are not just "quiet weeks." They are known industry-wide stoppages that need to be priced into schedules before contracts are signed.
Why this catches people
Trap 1: The shutdown is mandatory, not optional
In other provinces, a contractor might work through a holiday weekend to meet a deadline. In Quebec, CCQ-covered work is generally required to stop during the shutdown periods. The collective agreements negotiated between employers and unions require the shutdown. CCQ materials do allow exceptions for certain categories of work—including some civil engineering, roadwork, emergency, repair, maintenance, renovation, and modification work—but these are exceptions, not the norm.
Trap 2: It affects more than you think
The CCQ covers residential, institutional, commercial, and industrial construction, as well as civil engineering and roadwork. If your project involves any of these sectors in Quebec, the shutdown applies. This includes:
- General contractors and subcontractors
- Electricians, plumbers, and HVAC trades
- Heavy equipment operators
- Site supervisors
Trap 3: The dates shift slightly each year
The shutdown always falls in roughly the same period, but the exact start and end dates move based on the calendar. You cannot assume last year's dates apply this year. The CCQ publishes the official calendar annually.
Trap 4: Vacation pay is handled differently
Quebec construction workers receive vacation pay through the CCQ, not directly from employers. Employers remit 13% of wages to the CCQ throughout the year, and workers receive lump-sum vacation payments in late June (for the previous July-December earnings) and late November (for January-June earnings).
If you are an out-of-province contractor unfamiliar with this system, the first remittance notice from the CCQ can be a rude surprise.
What work is usually covered, and what may sit outside it
The shutdown question is really two questions:
- Is the project part of Quebec's regulated construction industry?
- If yes, is there a narrow exception or special authorization that allows activity during the shutdown?
In practical terms, most people should start from the assumption that the shutdown applies where the work involves mainstream residential, commercial, institutional, industrial, civil engineering, or roadwork activity in Quebec. That covers the projects that trigger the most deadline mistakes.
The confusion usually arises when someone relies on a vague label like "maintenance" or "specialized work" without checking whether the project is actually inside or outside the regulated construction regime. There are exceptions, but they are not a safe default assumption for contract planning.
If the deal matters, project teams should confirm the project classification and the applicable labour framework at the start, not in the week before a milestone.
A worked scheduling example
Assume a subcontract requires deficiency items to be completed within 10 working days after an inspection on Thursday, July 16, 2026.
If you count ordinary weekdays only, the tenth working day appears to land near the end of July. In practice, that is exactly when the summer shutdown begins. The legal meaning of the clause will depend on the contract wording and governing framework, but the operational reality is simpler: the site may not be functioning as if those are ordinary project days at all.
That is why Quebec construction schedules need two layers of analysis:
- the baseline working-day or business-day count in the contract; and
- the practical site-availability question created by the CCQ shutdown.
Even where the clause itself does not automatically "stop the clock," project managers, owners, and counsel still need to decide whether the milestone is realistic, whether notice should be served earlier, and whether payment timing or cure periods need explicit wording around the shutdown.
Contract drafting points that avoid avoidable disputes
Quebec construction contracts are safer when they deal with the shutdown expressly rather than pretending it is business as usual. Common drafting and project-control points include:
- defining whether milestone dates are calendar-based, working-day-based, or tied to actual site availability;
- stating how cure periods, review periods, and owner response windows behave if they span a mandatory shutdown;
- confirming whether procurement lead times or inspection windows are suspended, extended, or left untouched;
- aligning payment certificate timing with the reality that site progress may stop during the shutdown; and
- identifying cross-border handoffs where Ontario, Alberta, or federal teams continue working while Quebec crews are offline.
The shutdown is predictable. That means silence in the contract is rarely a good excuse.
How to plan around the shutdowns
Build buffer into summer deadlines. If your contract says "substantial completion by end of July," remember that two weeks of July are gone. Back-calculate accordingly.
Avoid December milestones for Quebec construction. Between the winter shutdown and the federal statutory holidays, late December is effectively dead time.
Check the CCQ calendar early. The official dates are published at ccq.org. Do not rely on assumptions.
Coordinate with Ontario or other provinces carefully. If your project spans Quebec and Ontario, your Quebec subcontractors will be offline during the CCQ shutdown while your Ontario team may still be working. Plan handoffs accordingly.
A practical checklist for out-of-province teams
If your head office is outside Quebec, this is the minimum checklist worth running:
- Check whether the project falls inside the CCQ-covered construction sectors.
- Pull the official annual CCQ calendar as soon as the project schedule is drafted.
- Review whether any notice, cure, payment, inspection, or turnover deadlines fall inside either shutdown block.
- Flag dependencies on Quebec crews in national programmes, because other provinces may still be operating normally.
- Confirm whether clients, lenders, consultants, or insurers expect progress reporting during a period when the site may be inactive.
Most deadline problems here come from teams using a generic Canadian project template and forgetting that Quebec construction is not operating on a generic Canadian timetable.
Quick answers (FAQ)
Is the Quebec construction shutdown legally mandatory?
Yes. The construction holidays are established through collective agreements administered by the CCQ. Employers covered by the CCQ must observe the shutdown periods. There are limited exceptions for emergency work or sites with special agreements.
Does the shutdown apply to all construction work in Quebec?
It applies to work covered by the Act respecting labour relations, vocational training and workforce management in the construction industry (R-20). This includes most residential, commercial, institutional, and industrial construction, as well as civil engineering. Some owner-builder work and certain specialized sectors may have different rules.
What if my deadline falls during the shutdown?
You will need to adjust your timeline or negotiate different terms. The shutdown dates are known well in advance, so contracts should account for them. If a force majeure clause applies, the shutdown itself is not typically considered force majeure since it is predictable and recurring.
Can I just treat the shutdown like an ordinary public holiday?
No. Public holidays usually remove one day at a time from a working-day count. The Quebec construction shutdown removes large blocks of practical site activity. Even where the legal counting rule is unchanged, the project reality often is.
Use the calculator to check your dates
The Canada Working Day Calculator includes Quebec's statutory holidays, but the CCQ construction shutdown is a sector-specific rule. When planning construction timelines in Quebec, layer the CCQ dates on top of your working-day calculation.
For technical rules and provincial differences, see the Canada Info Guide. For other deadline scenarios, visit Use Cases.
Related reading
- Provincial Holiday Differences: The Three Traps That Catch Employers
- Canadian Statutory Holidays: The Edge Cases That Break Deadlines
Sources
- CCQ Construction Holidays and Vacations: https://www.ccq.org/en/avantages-sociaux/dates-conges-vacances
- CCQ 2026 Construction Industry Calendar: https://www.ccq.org/-/media/Project/Ccq/Ccq-Website/PDF/ConventionsCollectives/Calendriers/Calendrier-2026.pdf
- Act respecting labour relations, vocational training and workforce management in the construction industry (R-20): https://www.legisquebec.gouv.qc.ca/en/document/cs/R-20