Wait, if OP themselves added a MIT license without getting a yes on it from their superior, they are already in hot water.

If it were me, I'd say that the license files should be _authored_ by someone in the company who has a say on such matters. Come on, if it's work for hire, the copyrights by default don't belong to you, so you don't go licensing it left and right, it's your employer's prerogative!