You don't get that choice. Yeah, you can not show up, and you might have a flexible work environment, but there's still the social pressure of, 'My desk is sitting empty while everybody else's in the office.'” Source
Methinks the latter is correct. I cannot find anything with regards to using to after can not in any dictionary.
Is there any rule with regards to the usage of to with not after a modal verb? If so, does it apply in the same manner to can not and cannot or can't? With respect to the quoted sentence there would a semantic difference between can not show up and cannot show up, and this difference, in turn, makes me think that I should use to after can not.