TN Visa Renewal for a very short period

Hey guys, I started a job in July 2007 but came down 3 weeks b/f my job to settle down, so my TN visa was stamped on mid-June 2007 and is valid to mid-June 2008, but my job won't finsih until the end of June 2008. Do I need to renew my TN visa for the last 2-3 weeks that I'll be working? And I'm returning back to Canada at theh end of June 2008. Anyone have a similar situation.

Thanks

Yes you will have to reapply -- go about a week before your current TN expires.
Remember to change the dates on your letter, have it signed by your employer and take the original. Have all the correct documentation and be prepared for the border interview.

Here is an article to help you:
Common TN1 Visa mistakes to Avoid

Good Luck!