How has the use of Blackberrys and iPhones effected your work/leisure time?

With these phones that enterprises use to track and send/receive information from employees, some people end up working off hours. Like when I was watching the Apple Keynote, they were saying that doctors can work all the time to improve the patient’s health. But does that mean that the doctor has to constantly check up on the patient’s vitals and report to the hospital? There are people on call for that.

Law firms also give each employee a Blackberry so they can work anytime, anywhere. The employers could also track the employees using the GPS.

What do you think about this restrictiveness of leisure time?