In 2003-2004 at my previous employer the company rolled out Blackberries to management and "key" personnel. Being responsible for a relatively large part of the infrastructure at this joint, I also got one.
One day I arrived at work and found the messaging group folks had delivered the BBs to some of the people in my area, and there was a box in my desk as well, with a little booklet (the must have cost a fortune to print, it was that well done) with usage policy (of course), instructions and steps for setting it up. The younger kids were besides themselves and already setting up the sync cradles and sending messages to each other. I picked up the phone and called the project manager, who was a friend of mine. I asked him to send one of his people to pick the box up.
"But everyone's getting one."
"I don't care, I don't want it."
"You are on Tier 1 and you're supposed to be on call..."
"I am. I have a cell phone, and if the IPC melts down at 3 AM, someone can call me."
"But this lets you check your email!"
"That's exactly why I don't want it"
A few days of back and forth politik ensued, and eventually my boss relented and let me be. Note that this was the time when the devices could not make phone calls - I hear they can now. Oh joy.
I figured that once I had that thing I'd never be able to get away from it, even on vacation. And that's exactly what happened to everyone else. People won't think twice about sending you an email for stupid little things at 10:00 PM, because they're working and figure everyone else should be as well. But making a phone call is very different, and most people won't do it unless it's something really important. People think it's no big deal because it's just a message. Bullshit.
If the data center is on fire, sure I want to know, no matter what time it is. But I don't want to hear little pings and murmurs from a PDA next to my bed because some VP couldn't find a file for tomorrow's presentation, or a fscking file server is down and Julie in accounting can't get to it. All that can wait until the morning.
If I had taken the thing and ended up in that 24/7/365 situation I don't think I'd sue my employer, but I would have probably ended up leaving a lot sooner than I did. Probably even if I were eligible for overtime. A case of "they ain't paying me enough for this crap" if I ever saw one.