I support casual wear. Unfortunately in more recent years the interpretation of "casual" has become ridiculously stupid, even obscene, with some people. I remember the other extreme when I started way back in the late sixties. It was strictly shirt and tie, or if no tie, shirt and jacket. On very hot days the Supervisor would authorise us to take our ties off! Casual (but neat) was allowed on nights and weekends. I think that there's plenty of scope to wear comfortable and casual clothes without descending to the appaling standards and poor taste that some of the newer generation have adopted.