is this illegal at work regarding pay

At my current place of employment at this ltc/nursing home, u clock in and out when ur done with ur work but thing is, even if u stay extra u do not get paid for it. it is required that u have a really good excuse for staying late and u need to have it approved by the supervisor in order to get the pay for it. otherwise u can stay 1 or 2 hr late bc ur not done with ur medicare charting or what not (which is required each shift) and not get paid for it. even if u tell the superviser bc u have admissions or what not, its still not a valid excuse. however, if u clock in late, it will show what time u clock in on ur paystub but even if u clock out late, it will show that u leave exactly at 11:30 (i work 3-11 shift). so i usually stay a few min late when i come to work late to make up for it because it shows on my paystub but when i leave late it always say i leave on time and come on time. is this illegal? the only way someone gets ot in this facility is to work an extra day or shift. what should i do? if this is illegal, why has this been going on for years and years? or is this how most ltc and nursing homes run by?

If you arrive late for work, and clock in late, which means after the time that you are supposed to start; the employer is not required to pay you the full time even if you stay over the extra few minutes.

so ideally ur suppose to leave wen ur shift ends bc ur not getting paid for it. but if ur caught with not documenting that day u will get a notice for not being compliant with the medicare guidelines and have to document on another day for a late entry. so basically that day ur doing double the charting. and things can get pile up that way and eventually you will still never finish your work. One nurse who worked there one time had to cover about 40-50 residents because one nurse was a no-show. the facility did send a nurse to help him pass the night meds but he ended up staying about 2 hours late. he talked with administrator about being reimbursed for staying extra and they say no because u have your easy days and u have ur hard days. its not fair to the facility that they have to pay u for the hard days when they dont take money off from ur check when you have ur easy days. and that was a the reply....

most places have, for example, systems like KRONOS - and policies for punching in and out - they round up - so if you clock in at 1140am, it''ll show up as 11:45am. If you punch in at 12:02 pm, it clocks you at 11:15... something about 7 minute rounding up. This was in my facility's policy for clocking in and out. So I would clock in at 10:30am for an 11:00 shift and get paid for the little extra time, rather than risking punching in at 11:01 and be counted as late by another 14 minutes... it's confusing. You should get paid or not paid by the minute. What the heck????!!!! I'm sure it's to make paycheck computations easier... rounding up or down for even numbers...? Not sure. Never thought too much about it - just knew I'd clock in at whatever time and clock out to get my time (of course making sure I get my "no lunch" time!)