"If you need to dress a little more formally during certain parts of your workday (i.e. during a meeting with important clients), it is acceptable to put on a suit jacket or sports coat over an aloha shirt, but skip the necktie."
Suomessa sopii hyvin kuumana kesäpäivänä kaikkialle muualle paitsi pukeutumisnatseimpiin työpaikkoihin.