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The act would expand occupational safety coverage, recognize incarcerated firefighters as employees entitled to wage protections and provide $20 million annually for states to adopt safety and wage compliance.

"Our occupational health is not an emergency service, and they remind us of that all the time," she said.

However, Mr Sahota said Mr Brown was a "private and stoic" man who did not seek the support from occupational health colleagues that he was urged to take during their meetings.

“That’s not part of the job of our employees or our tech supports,” said Ruth Elio, an occupational nurse who supervised the center’s workers when she spoke with KFF Health News last year.

Last year, the Saudi government said that there had been "tangible achievements" in occupational health and safety, with rates of deaths and injuries decreasing.