Originally Posted by Short Bus Drive

Actually, at our company, they don't "ask". If they get you on your "primary" phone, YOU WILL WORK. Somewhat fortunately, at my company they pay you 200% of your pay, and they can only do it a certain amount a year/ month. I forget what it is, but NOT MUCH!
Doesn't happen much also, because usually when they see a trip that doesn't have coverage coming up, or whatever, they put it in open time, and whoever wants it, can work it for 150% Pay.