[Bungleau]

Good way to find out what kind of company you're dealing with.

My thoughts...

Two things are at play here. The need to get the job done and the safety policy. Are they fighting each other?

Call Mark to the office. Tell him what you saw and ask for his explanation of what was going on. Determine if there's something that needs to be addressed in the process that would allow him to follow the safety policy and still get his job done.

One thing worthy of noting or discussing with Mark: as a single dad, his two kids rely on him every day, and will continue to do so for a while to come. How would his ability to take care of his kids be affected if he lost his sight?

Bottom line: get to the reason for the issue and resolve it, whether it's the job that needs doing, the safety policy, or Mark.

Record the interaction as required. Whether he gets the involuntary time off is beside the point; it does not say by the book that he will be fired.