If I'm on TN visa, how long can I leave the US and visit my family in Canada?

While I'm in Canada, am I allowed to do work related stuff on my work laptop, or do I have to pause it completely until I return to the US?

submitted by /u/rice_python
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source https://www.reddit.com/r/immigration/comments/o4jj68/if_im_on_tn_visa_how_long_can_i_leave_the_us_and/