He appears to be using leg garters above his knees (See the billowing.) to keep his pants legs higher so may work where the floor or work gets messy or dirty, which is a practical reason to not wear great shoes.
I remember grocery workers in Italian neighborhood Brooklyn markets when we would visit family there. That was in the fifties and sixties. The shirts always gave a combo of hard worker but bad boy look. In reality they were practical but they look soooo good.