Compare it to the deadliest job category in the US, transportation workers, which sits “14.6 fatalities per 100,000 FTE workers” or ~1.5k/10M/year https://www.bls.gov/news.release/cfoi.nr0.htm Construction is #2 on that list.

So 3k per year is for 10M workers is twice as deadly for a less dangerous profession, but with worse safety standards, poor treatment, and inherent risks from extreme heat it doesn’t actually sound unrealistic.