I'll ignore the call (usually because I'm still sleeping when they call me in the AM.) If it's the one bitchy HR TM that no one can stand, I ignore the call. If it's an ETL, I'll probably call back and let them know I can't. I don't drive, I can't run in when they need me lol. If I get asked whie I'm working, and I'm not at 40 hours, I'll usually stay.