Boss: (to employee) - Experts say humor on the job relieves tension in this time of down-sizing, Knock, Knock. Employee: Who's there? Boss: Not you anymore.
The two partners in a law firm were having lunch when suddenly one of them jumped up from the table and said, "I have to go back to the office. I forgot to lock the safe!" "What are you worried about?" the other said. "We're both here."