TN : Changing Employers

Is it possible for a Canadian with a TN visa to change employers?
Is there any minimum lenght of stay that I must be at my employer?
I have only been here 1 week and have decided to go work with a competitor.

Will the officials at the border have an issue with changing employers so soon?

R. Slack
Hello ReggieSlack, It's been a lot time since this post, but I'm in a similar situation you posted, can you please tell me, how it goes? Do you had any problem when you changed your employer?