what kinda consideration? i wanna 86 him
OK, so you considered it - that's good enough for me.
I'm presuming he is an employee of your home repair type gig. Am I correct?
Sic the company health insurance folks on him for a work performance capability evaluation - they will see if what he is doing on the outside job exceeds his light duty limitation. You can fire him for fraud or conduct unbecoming if they say he was in essence scamming you.
Fire him because essential portions of the job description cannot be performed while on light duty. You do have a written job description, don't you? If not, check with the unions <spit> to see what they have for similar positions.
Fire him because he did not get approval for an outside job, if that was in your company handbook. If that's not there (permission for outside work or handbook) get it there ASAP. PM me for free assistance (it's merely a cut&paste job).
If you have documented everything he has screwed up, just add this to the list and break the camel's back with it. You do document screwups, right?
Document that he is shorting you hours from a full 40 per week to get to the side job. Helps even more if he is fudging his time, which is criminal fraud. (one time is usually a sketchy reason for temination, more than once is a pattern of behavior - know what I mean?)
Is he making statements (or are other employees alleging he has made statements) that he can get around certain distasteful aspects of his job due to "light duty" status? Fire him for insubordination.
Remember, Virginia is not a right-to-work state. You can fire him because it is a day ending in the letter "Y" so long as he cannot prove you did it based on his race or medical condition alone (presuming all other "protected" classes do not come into play).
Hope these ideas help.
stay safe.
skidmark