Follow the behaviour you're talking about through to the logical conclusion. If your employer is legally liable for things you do on your own time with your ow

Follow the behaviour you're talking about through to the logical conclusion. If your employer is legally liable for things you do on your own time with your own equipment, and required to prove that they weren't involved and that their equipment wasn't involved, the only option that will be open to them is to monitor you every single moment of every single day. Anyone that refuses to agree to those terms doesn't get a job. You won't be able to say "Well, that's okay, I'll take a job with another company" because it'll be true for employers all the way from your mom and pop corner shops up to large multinational corporations.