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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.
by Coell July 06, 2005
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The term used by places of buisiness that allow the employees a slackening of the dress code on the final day of the work week. Commonly known as "Biz Cas Fri". Well, not really.
"Oh, how I love to wear unique-colored pants and a belt full of metal squares rather than just plain khakis on BUSINESS CASUAL FRIDAY."
by Kaleb Matthews January 12, 2006
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The day when peolpe at the office wear free polo shirts they got from various software companies.
My favorite day of the week.
by SMD August 21, 2004
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