Go to jw.org right now friends and you will see a young male JW witnessing in a rural setting with publication in hand and - take careful note - wearing a crisply-white open-neck shirt. Bring out the carnival, light the lights: The organ ization is kicking itself into an ongoing casualization of its rank and file.
In the 1960s through 1980s I know brothers who dared to attire themselves sans ties who were reprimanded or worse.