You shouldn't skip work.
It's Saturday morning, Ken is listening to his voicemail and hears a message from his boss asking him to report to work on Saturday.
Ken wants to react to the voicemail.
Ken deletes the voicemail and starts getting ready to go into work right away.
Ken hangs up the phone and doesn't delete the voicemail or mark it heard, so he can pretend he never got the message yet.
Ken's boss is delighted when Ken arrives and apologizes for the short notice but tells Ken he'll get a bonus for this.
Ken's boss is livid with Ken the next week asking him why he never showed up on Saturday and threatening to fire him.