Can I have multiple TN at the same time?

Right now I am working full-time at a computer company in USA. Whether I can also work at another company as a part-time employee?

That means, can I get a full-time TN together with another part-time TN at the same time?

Thanks

Yes.

I am presently working in Southern California as a Registered Nurse on a TN visa.
I have been offered temporary part time work with 3 casual staffing companies.
I have a few questions
Do I require a new TN for each of them? I've read yes on the this posting here.....so i think i have my answer there.
Can I have 4 TN visas? is there a limit???
Can I apply for all 3 on one border crossing? Or is this pushing my luck??
If they deny me one or all of these TN's will it affect the TN i am presently working on?
what about the san diego/ tiajuana POE (have you driven across? walked across?) Had success with TN's there?

I would really appreciate any and all advice on this
Thanks so much
Deb

There was a lurker on TN websites that had 10 at one time.
read my signature for TN info