Construction trades at the Boise fab
Micron’s Boise build has employed thousands of trades workers. Sources disagree on the peak.
3,700Peak, 2024 company-sourced
4,000 to 6,000Later, less reliable
Peak trades workers at Micron Boise, by source
On site, 2024
500
Peak, Idaho Statesman 2024
3,700
Peak, union-dispatch blog
4,000+
Peak, construction-data site
about 6,000
The 3,700 figure comes from the earliest, most reputable source.
Who is building
- A 2024-era Idaho Statesman piece reported 500 construction workers on site rising to 3,700 at peak, with recruiting from neighboring states. It is the most defensible figure.
- Later, less authoritative sources say 4,000 or more, and about 6,000 under a Yates and Layton joint venture.
- The sources even disagree on who leads construction: Exyte in 2024, Hoffman in a late-2025 report, and Yates and Layton on a construction-data site.
- Hardest trades to hire: electricians, mechanical and cleanroom trades, pipefitters and controls technicians. Some insiders worry the fab could monopolize the region’s trade workers.
- Peak construction is generally placed around 2026, with ID1 first wafer output targeted for mid-2027.
What it means
Fab construction pulls in electricians, pipefitters, millwrights, welders and laborers. Counts below move fast and come from mixed sources, so read them as a picture of scale, not a headcount.
Not covered: official Micron or Idaho Department of Labor counts, which would settle the peak.