I think that 4700 number is total work-related deaths. Construction deaths were just over 1000, which was still surprising high to me. But that’s for every construction job in America! I can’t imagine choosing any 10 construction sites in the US and finding more than a dozen deaths among them. SoFi Stadium in Los Angeles is a good comparison. Two men died on the job there, and that was considered scandalous.

https://www.bls.gov/opub/ted/2022/a-look-at-workplace-deaths-injuries-and-illnesses-on-workers-memorial-day.htm