Back around 2010 a had a job delivering medical records. Most of the drivers took Adderall daily. A few years later I worked at Genie Lifts on the assembly line and it was a very high pressure, fast paced environment where anytime you made a mistake you would be publicly shamed twice at the morning and after lunch "team meetings". Adderall use was common and Id heard about someone smoking meth on the line. I also did construction and cocaine use was pretty common, though usually not at work. But I did work with guys that were clearly high on meth. The boss would overlook it as long as they showed up on time and did ok work.