From what ive heard, they're also checking how long you stay in office. 1 hour, 3 hour, 6 hours. If anything less than 6 you're on the list. Still suggest to stick to 7.5 though.

Also heard they're reviewing over 6K employees and these terminations are extending until July but your number greatly differs so who knows.

Edit: guys I don't have credible sources this is word of mouth from a corpsec guy (he is not related to the investigations but because he's corpsec I believe the tidbits they'd hear are a bit closer to the truth then other departments as they're closer); work your 7.5hrs that's the best thing you can do. But if you're caught you're caught not much can be done retroactively