FWIW, I'm not a professional, but I've worn a full-face respirator while spending entire days working in extremely hot crawlspaces, demo'ing and removing heavy

FWIW, I'm not a professional, but I've worn a full-face respirator while spending entire days working in extremely hot crawlspaces, demo'ing and removing heavy antique cast iron drain pipe, running a wet saw for large-format tile, etc. I'm just one datapoint, but my assumption would be that if it's truly too much of a burden, their employer should be buying better respirators and/or filters.