I don't know whether this question was asked before, but in "The Man Behind the Curtain," Roger Workman has a DHARMA logo on his shirt uniform throughout the episode. When his son Ben comes of age and becomes a workman as well, his uniform does not have the DHARMA logo. Was that a prop or wardrobe error or something that will be explained later as part of the DHARMA cast system?

Thanks for answering this silly question.