Tight. 3 of 4 warning signs are red, 1 is unknown. Confidence: medium.
The evidence supports a persistent shortage of skilled construction workers that matters for building data centers. In a survey of 1,830 US construction firms this summer, 42% said worker shortages had delayed projects, 88% of firms with craft openings said those jobs are as hard or harder to fill than a year ago, and 55% raised pay faster than the year before.
Large contractors have tools to manage the scarcity, such as traveling crews, prefabrication and choosing which jobs to take. Their strong results don't show that labor is unconstrained.
Outlook: the key open question is whether workforce growth and productivity can keep up with project demand in the trades and regions that matter. Public data doesn't measure that yet.
New here? Skip to Background below for the basics. Coming back? Start with What changed.
This month
October 2026 · Updated Oct 5 · Next update after EMCOR's Q3 results
What changed since last month
First reading. From next month this section leads with what moved and why.
Scorecard
Warning sign | What we saw | Reading | Source |
Long waits | Measured here as labor-related project delays. 42% of firms say shortages of their own or their subcontractors' workers have delayed projects (45% a year earlier). Worker shortages remain the most common cause of delays. | 🔴 Yes | |
Orders above supply | Measured here as difficulty filling skilled jobs. Among firms with craft openings, 88% say those jobs are as hard or harder to fill than a year ago, and 50% say harder. Among firms with electrician openings, 81% report difficulty filling them. | 🔴 Yes | |
Prices going up | 55% of firms raised hourly craft pay by more than the year before. Among firms doing data center work, 49% cite wage pressure. | 🔴 Yes | |
New capacity not enough | Not measured. AGC says "the nation is not producing enough qualified workers," but no source compares the number of newly qualified workers with demand. Training is rising: 35% of firms increased training spending and 25% expanded onsite craft training. | ⚪ Unknown |
Score: 3 red, 0 green, 0 mixed, 1 unknown = 🟠 Tight. One sign is unknown, so confidence is medium. The survey covers all US construction, not only data centers, so it describes the labor pool data centers draw from rather than data center projects directly.
Dates to watch
Oct 22 (expected): Comfort Systems Q3 results. Watch backlog, the technology share of revenue, and any comments on crew availability or work declined.
Oct 29 (expected): EMCOR Q3 results. Watch remaining performance obligations, margins, and whether labor or travel costs rise.
"Expected" dates come from earnings calendars. The company hasn't announced them yet.
Status history
- Oct 2026: 🟠 Tight (3 red, 1 unknown), medium confidence. First reading.
Background
Reference. Updated when the facts change, not every month.
What it is
Building a data center takes large crews of skilled tradespeople: electricians to wire power from the substation to every rack, pipefitters and HVAC technicians for cooling, and specialists who test everything before it opens (commissioning).
Where it sits: Land, power and equipment → skilled crews build, install and test → data center goes live
Skilled labor matters at several stages, from site work and electrical installation to cooling and final testing. A shortage can affect which projects contractors bid on, which they accept, how long they take and what they cost.
When something is short, two things happen. The seller can charge more and stays fully booked. The buyer waits. Same shortage, opposite effect on the stock.
Why can't they just hire more?
- Training takes years. Electricians typically complete a four- or five-year apprenticeship, though apprentices do productive work while they train.
- Data centers compete with other projects. Among firms doing data center work, 58% report more competition for skilled workers.
- Immigration enforcement. 29% of firms report at least one effect, and 16% say subcontractors lost workers.
How big is it?
Measure | Number |
Firms with hourly craft openings | 87% |
Firms with electrician openings that report difficulty filling them | 81%, the hardest trade. Mechanics 79%, HVAC technicians 77% |
Firms reporting labor-related project delays | 42%, from 45% a year earlier |
Firms that did data center work in the past year | 28% |
Comfort Systems backlog (Q2 2026) | $14.1B, up 73%. Technology work was 58% of first-half 2026 revenue |
EMCOR remaining performance obligations (Q2 2026) | $17.14B, up 44% |
Who wins, who waits
The effects below are our interpretation, not company statements.
Company | Likely effect | Why |
Comfort Systems USA (FIX) | Possible winner | Mechanical and electrical contractor with a $14.1B backlog, up 73%. Technology work was 58% of first-half revenue, and gross margin rose to 25.9% from 23.5%, helped by pricing, execution and favorable project revisions. It says it takes only work "we know we can perform." Contractors with dependable crews may gain share and pricing power, but only if pricing and productivity outrun wage, travel and execution costs. |
EMCOR Group (EME) | Possible winner | Remaining performance obligations hit a record $17.14B, up 44%, with Virginia, Texas and Georgia data centers leading. That shows a strong contracted workload, not the size of the labor shortage. The same condition applies: benefits depend on pricing and productivity exceeding labor costs. |
Smaller and less selective contractors | Mixed | More work is available, but rising wages can eat into margins on fixed-price contracts, and projects can't run faster than crews can be hired. |
META, Microsoft, Amazon | Exposed | Their data center build plans depend on crews being available. Shortages can stretch schedules and raise building costs. |
CRWV, data center developers | Exposed | Revenue starts only when capacity goes live, so construction delays push out their income. |
The takeaway: the skilled-labor shortage is broad and well documented. Large contractors appear better equipped to manage it, but a shortage raises both their opportunity and their delivery risk.
When does it end, and what could replace it?
- Training: 35% of firms increased training spending and 25% expanded onsite craft training. Neither figure shows how many additional qualified workers will result.
- Traveling crews: union workers travel to busy regions with daily allowances. This moves existing workers around rather than adding new ones.
- Prefabrication: building parts of electrical and cooling systems in factories can raise productivity and reduce onsite labor needs. How much of the shortage it offsets hasn't been measured.
What could go wrong for this view
- Data center building slows. Labor would free up quickly if hyperscalers cut spending.
- Other construction stays soft. Workers leaving slower sectors could fill data center jobs.
- Survey scope. The survey covers all US construction, and responding firms may not represent data center builders. It describes the broad labor pool, not specific data center projects.
How to read a change
Good easing
Fewer firms report labor-related delays and wage growth slows, while data center bookings keep growing.
Bad easing
Labor frees up because data center projects are cancelled or paused.
What would change our view
- Gets tighter: contractors report declining work for lack of crews, labor-driven schedule changes, or rising overtime and travel costs.
- Gets easier (good): fewer firms report delays or hard-to-fill jobs while bookings stay strong.
- Gets easier (bad): contractor bookings fall and cancellations rise together. Falling backlog alone isn't enough, since it also drops when work is completed faster.
Past scorecards
Each month the previous scorecard moves here, newest first.
- None yet. October 2026 is the first reading.
Evidence and sources
Survey data
- AGC and NCCER 2026 Workforce Survey (July–August 2026, 1,830 respondents): 87% of firms report hourly craft openings; among firms with craft openings, 88% say they're as hard or harder to fill than a year ago, including 50% harder; 42% say shortages of their own or subcontractors' workers delayed projects, versus 45% last year; 26% report no significant delays from any cause; 55% raised hourly craft pay by more than a year earlier; 28% did data center work, and of those 58% report more competition for skilled workers, 49% wage pressure and 36% harder-to-fill positions; 29% report effects from immigration enforcement, 16% say subcontractors lost workers; 35% initiated or increased training spending, 25% implemented or increased onsite craft training; among firms with electrician openings, 81% report difficulty (mechanics 79%, HVAC technicians 77%). Survey analysis
- AGC chief economist Ken Simonson: "The need for people to work on new data centers is keeping labor conditions tight even as demand for many other types of projects remains relatively soft. Meanwhile, the nation is not producing enough qualified workers, even as federal immigration policies are impacting nearly one-third of firms." AGC release
- Electricians typically learn through a four- or five-year apprenticeship. BLS Occupational Outlook Handbook
Company statements
- Comfort Systems Q2 2026 (Jul 2026): backlog $14.1B, up 73%; technology 58% of first-half 2026 revenue; gross margin 25.9% from 23.5%; "excellent pricing"; favorable project revisions; "we only take work that we know we can perform." Transcript
- EMCOR Q2 2026 (Jul 30, 2026): remaining performance obligations $17.14B, up 44%; electrical construction operating margin 13.9%; union workers "will travel themselves" with per diem; more prefabrication in rural markets. Transcript
- Dates: Comfort Systems estimate · EMCOR estimate
- Where sources disagree: the survey shows broad shortages, while large contractors are growing strongly. Their growth reflects better tools for managing scarcity, not evidence that the shortage has eased. Labor-related delays dipped slightly from 45% to 42%.
- What would sharpen this page: crew mobilization times, openings by trade and region, overtime and per diem costs, labor-driven schedule changes, and work declined because crews weren't available.
Words used on this page
- Craft worker / skilled trades: hands-on construction workers such as electricians, pipefitters and HVAC technicians.
- HVAC: heating, ventilation and air conditioning. In data centers, mostly cooling.
- Subcontractor: a specialist firm hired by the main contractor for part of the job.
- Commissioning: testing a finished facility and bringing it into operation.
- Apprenticeship: paid on-the-job training combined with classroom study.
- Prefabrication: building parts of a system in a factory before shipping them to the site.
- Per diem: a daily allowance paid to workers who travel to a job.
- Backlog / remaining performance obligations: signed work not yet completed.
- Fixed-price contract: the contractor agrees a price up front, so rising costs come out of its margin.
Invest Deeper · Educational research, not investment advice.
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