Still anecdotal, but I’ve personally done roofing (for a portion of a summer) and worked in a warehouse (for a year and a half including 2 full summers). Roofin

Still anecdotal, but I’ve personally done roofing (for a portion of a summer) and worked in a warehouse (for a year and a half including 2 full summers). Roofing was worse, but not by that wide of a margin - just in terms of physical exhaustion, the warehouse work I did was much closer to roofing than to, say, retail or food service. Then again, while the warehouse I worked in had much less stringent metrics than Amazon’s, there were other factors that may have made it worse overall.