monitoring your use of company assets at home is plenty legal.

like, companies can force you to keep your camera on. they already track away time, number of keystrokes per hour, and can parse your MS Teams calls and provide transcripts -- they even do this for end users.

Legal Hold software already does this if you need to flag a user. It's not GPT-4 but you can get pretty good insights into what your workers are or are not doing.