Hey, now that's not fair. Just because a person works for a restrictive company has nothing to do with whether they're into OSS or not. For example, they could

Hey, now that's not fair. Just because a person works for a restrictive company has nothing to do with whether they're into OSS or not. For example, they could have been out of a job for a while and this was a breath of fresh air. Or, the company they chose to work for happened to be developing things they wanted to be a part of. Or, they believe there were competent engineers at that company and that they could learn from them. And furthermore, "the developer that worries"? Really? I take personal offense to that, probably because I am in this exact situation. I worry about everything of this sort. I try to do nothing outside of work that could be somehow construed to be related to work. Why? Because I don't want the work to be taken from me and myself to be sued, or fired or any number of terrible things. Is it likely to happen? No. But you know what? It's worth taking those extra measures to make sure I'm not working on anything that could bring about negative consequences.