A company's objective in establishing a business casual dress code, is to allow employees to work comfortably in their environment yet still look professional for customers, potential employees and visitors to the workplace.
Business casual dress seems to be the accepted "standard" for corporate dress code today. The problem is that it's confusing, and seems to differ from place to place.
Some casual clothing is not suitable for the office, though. Clothing that is appropriate for the beach, yoga, etc. are not appropriate choices for a professional environment.
Clothing that reveals any cleavage is absolutely inappropriate. Showing your back, chest, feet, stomach or under garments is not appropriate for a place of business -- even in a business casual setting.
Clothing should always be pressed. Wrinkles are never o.k. Torn, dirty, or fraying is unacceptable. Words, logos, terms, or pictures are too casual. Sports teams, university affiliation, and branded clothing is best left for more casual occasions...not the office.
Many offices have regular "dress down days" or casual Fridays. On these days, jeans and more casual items are allowed.
