Your rights and his [the employer] are compatible.
They should be, but he irrationally wants me disarmed at work.
If you insist on violating his rights,
My gun in my trunk in no way violates his rights; and you cannot show such a violation. -- Can you try?
My sleeping in your house whenever I please in no way violates your rights.
Thats it? -- Thats your "try"?
-- Like the rest of your comments in that post, you make no rational arguments to counter.
On the contrary: the answer to my example, as to yours, is it's the owner's private property. You don't believe that the owner is in charge of his own property; you think you are. The burden is on you to prove that you're in charge.