We once had a plant manager who enforced a strict professional attire for all. He got everyone in the company to wear shirt and tie even when they had to wear safety overalls over the top.
That all changed one day when he was visiting the workshop and got his tie stuck on a piece of rotating equipment (drill press as the story went). After nearly losing his head in the literal sense the dress code was relaxed leaving everyone scratching their heads wondering why a chemical plant with no customer facing positions had a dress code to begin with.
tangentially, that nice tie your doctor wears when he comes in to your hospital room to examine you; saturated with infectious organisms.