Can my employer see my text messages?

My employer pays for my plan for the iPhone 5 I use. It's with Rogers by the way (Canada).

Can they see my text messages easily? Or would they need to go through a lot of things, such as contacting Rogers or obtaining a court order or something?

Do you have a gmail account coz i think they obtain the rights over any info sent with them. Then are they then allowed to to sell info to others? I think its become a very scarey business. I have no sources just what i read online.

Legally they can confiscate your phone for any reason when work pays your account. Its why I keep my iphone completely separate from work and won't install an app to poll work email on it either.