If they're going to force you to start clocking in and out then warn them that you're going to start acting like an hourly employee. Mandatory 15 minute breaks morning and afternoon with a 30 minute mandatory lunch. You work from x time to x time, not a minute before or after without getting OT. There's a premium on top of that for working past a certain hour in the evening. If they want to start a case that's scheduled to proceed past when you're done, whoops, so sorry. You'll have to get in line for call cases. You won't be participating in unreimbursed committees or doing any administrative work whatsoever. Etc etc etc.
Malicious compliance is the term here.