It's 'business casual' all week at my office. The HR policy on
the BC dress code calls for a minimum (for guys) of a collared
t-shirt with no advertising slogans and/or logos, and no denim
jeans or shorts.
However, being in the IT field, this dress code is regularly
flouted, especially at the height of summer when the weather gets
hot and humid, and employees start showing up in bermudas and cargo
pants.