Calgary's construction market does not sit still. Two figures from the same regional labour-market source, eighteen months apart, show a real swing — and Alberta is the one province where the payment rules that carry a firm through that swing are published in actual numbers, not a mechanism description.
Market signals
Read carefully: the 2024 figure is people employed, drawn from Statistics Canada's Labour Force Survey and reported by BuildForce Canada, and it shows Calgary adding 5,700 workers, a 6.9% gain — the largest real gain of any Alberta economic region that year. The 2026 figure is a completely different measure: the dollar value of residential building permits issued in the 12 months ending January 2026, down 11% in the Calgary CMA specifically, against a province-wide decline of 15% across all four Alberta CMAs tracked. A firm that only reads the 2024 figure sees growth; a firm that only reads the 2026 figure sees contraction. Both are real, both are Calgary-specific, and neither alone tells you where the market is right now — they measure different things at different points in the cycle.
A firm that staffed up through 2024's employment gain is now bidding into a market where residential permit values have pulled back. That is exactly the condition that makes subtrade availability unpredictable — not because trades left the city, but because the commercial and non-residential side of the market does not move on the same clock as residential permits. Alberta's OHS Code and its compulsory certification list, covered in full on the Alberta OHS and trade certification page, apply to every Calgary crew regardless of which side of that cycle a given project sits in.
This matters more in a commercial-cycle market than almost anywhere else in this cluster: Alberta is the only province among BC, Ontario, Manitoba and Nova Scotia in this series that publishes real prompt-payment day counts rather than a mechanism description. Under the Prompt Payment and Construction Lien Act, owners must pay a proper invoice within 28 calendar days; a dispute requires a Notice of Non-Payment within 14 calendar days stating the amount withheld and the reasons; and a contractor must pay each subcontractor within 7 calendar days of receiving payment from the owner — corroborated directly in the Act at section 32.3(1). Ontario's equivalent counts are not publishable at all (see this cluster's British Columbia and Manitoba pages for how those provinces compare); Alberta's are, and a Calgary GC bidding a commercial job — see AI-assisted construction bidding for the mechanics of that process — can cite the actual clock to a subcontractor asking when payment is coming.
Separate from prompt payment, section 18(1) of the PPCLA requires an owner to retain 10% of the value of work done and materials furnished for 60 days from substantial performance or completion — the same figure whether the project is a residential build during a growth year or a commercial fit-out during a slower one. For projects with a contract value above the prescribed amount (alberta.ca's own guidance names $10 million) and a schedule longer than 12 months, section 24.1 allows annual or phased holdback release instead of a single lump sum at the end.
Both figures are real and both are Calgary-specific, but they measure different things at different dates: employment rose sharply through 2024, while residential permit values were down 11% for the year ending January 2026. Treat them as two data points in a cycle, not a single trend.
It applies to construction contracts under the Prompt Payment and Construction Lien Act. Alberta government project contracts are instead subject to the Public Works Act and are exempt from the PPCLA's timelines, per alberta.ca's own guidance — check which regime a public contract falls under before assuming the 28-day clock applies.
A 30-minute call is enough to see where AI keeps prompt-payment and holdback dates straight across every active Calgary contract.
