$20K/Year raise for 10 hours/week... Is this a trap?

I have been offered a new position (inside my current company) that comes with a $20K/Year raise... and they want to add me to the on call rotation, which would require an additional 5 hours/week of "being available" (I'd have a pager to carry around). <br><br>On call time is not paid (sucks), unless I get called, then I'm paid for the time I'm on the phone (they estimate about another 5 hours/week). So, 10 hours/week extra for $20K/year seems like a good deal to me. <br><br>However... sometimes on call shifts don't get anything, and sometimes you get slammed. I'm expecting a 5 hour/week average, but if I get slammed, I could be looking at 20-30 hours/week extra.<br><br>My questions:<br><br>1. **Will I ever see a time where I'm actually slammed for an extended period of time?** (e.g., months?) <br><br>2. **Will I make it through my first year of on call without burning out and quitting?**<br><br> tl;dr - 10 hours/week of on call time for a $20K/Year raise seems like a good deal, but I'm worried about burn out, or getting slammed... and want your opinions.<br><br>EDIT: For those of you saying "no on call time is paid", I'm not sure why you are arguing this. I don't get paid for on call time unless I'm "called". If I'm called, I get paid for the time I'm on the phone... If I don't get called, I don't get paid. This is the way they say it works, and this is the way I've heard it works for other companies...<br><br>EDIT2: "Why not calculated your current after tax pay per hour... and compare it to $20/hour?" <br><br>Because I'm salaried... So, my pay is not calculated by hours... and they don't care how many hours I work, as long as the work gets done...<br><br>EDIT3: The consensus is that I should try and get the on call time to be paid... I'll see what I can do.