There’s no comparison-truck drivers stay in their cabs (my husband drove truck), grocery clerks only work about 30 hours a week (my dad is in the Retail Clerks Union) but healthcare workers are constantly exposed to disease 24/7 while wearing PPE, which is MUCH MORE than a little mask that the general public are being told to wear, and some have even been mandated to work a full 24 hours without breaks, sleep, etc, thereby risking their own health and immune systems. So, no, there’s NO comparison.