I had a friend who was on three weeks vacation when the company he worked for was bought. This was before smart phones. He came back to the office, and started going through 3 weeks worth of email, phone messages, paper mail, etc. At noon, the manager came and told him because he hadn't signed a contract with the new company, in the stipulated two weeks, that he was deemed to have quit. They escorted him to the door, he hadn't even worked his way down to that piece of paper in his mailbox yet.