US workplace deaths have fallen 70 percent since OSHA was formed.
It's not exactly like children losing arms to looms and being locked inside enflamed textile mills.
The fact there's still some work left to do doesn't imply we've made no progress.
It does show that unions haven't been able to comprehensively fix these issues either, though.
OSHA is toothless in practice. For large companies the fines are negligible.
https://www.ishn.com/articles/108358-osha-issues-tiny-penalt...
"OSHA has fined Tower King II Inc. $12,934 for the death of three workers who were attempting to install a new antenna on a communications tower in Miami. This is the maximum fine for one serious citation. "
"U.S. Rarely Seeks Charges For Deaths in Workplace"
https://www.nytimes.com/2003/12/22/us/us-rarely-seeks-charge...
Also, under Trump