When plants like Nissan's in Sunderland (UK) have worked out how to make well over 500K cars per year incorporating a luxury brand car (Infiniti Q30), a mid range crossover company cash cow (Qashqai) and an electric car (Leaf) safely with a strong track record of keeping workers safe there is simply no excuse for this at all. No worker in modern day manufacturing should be concerned for their safety at work, ever.
I am a fan of Tesla and Musk but this line in the email pasted in by thsowers irks me and signals to the underlying issue:
"Managers must always put their team’s safety above their own"
No Elon, every employee's safety is equal and is more important than your TACT time.