It seems like MI-OSHA, does a walk through on just about every job I've been on in the last five years. The majority of those jobs have been in auto plants and Osha comes through about once a week.
Everytime they show up, they check cords and cut ends off any that aren't in proper condition.
I think in some instances, it really needs to be done but, not neccesarily by the electrician on the job.
Remember, you can protect the fool but not the damn fool.
I would say, our responsibility ends with our equipment and our installations.
If the plumbers want to act like idiots and work with wet power tools without checking the GFI or asking the electrician to check it, they deserve what they get.
It's everyones responsibility to ensure their own safety on the job.