In formal business environments, employees are allowed to wear
business casual clothes instead of suits on this last day of the work week. Sometimes given a theme, it is intended to alleviate stress and bolster employee morale.
In smaller companies where
business casual is worn every day, this day should be called just "
Casual Friday" when lower-quality clothes are allowed.
When in doubt, it is better to overdress than to wear clothes too casual, so as not to be reprimanded by the suits.
formal > business formal > business casual > casual
Business casual: Sweater, collar
without a necktie, polo, vendor swag, blouse, black/brown/navy/gray
trousers, pressed khakis.
Casual: Dockers, denim jeans, shorts, t-shirts, linen.