In the early 90's, I ran the "Fat Man in the Seat" case in the Western Australian Industrial Relations Commission, wherein the employee had been terminated because he had "allowed himself" to become heavier than the Safe Working Load of the seat in a front end loader, causing it to bottom out and hurt his back.

Whilst it didn't affect his compensation claim, the Commisioner upheld the dismissal because the employer had assisted every way possible to help this employee lose weight, and keep the weight off, yet he did not stick to the health program.

I was the AWU union advocate.