Trust me, your pay can be far wrong, mines been wrong 4 times in the past year, always clocked in and out, given them my holidays and reminded them by message / saying to them. I'm on holiday, and rung in sick and when back, same for overtime, any overtime I've put on a lets talk before the cut off period and still had same manager screw it up, we currently have 6 people waiting on being paid between 2 to 7 months of fighting for it and colleague help etc is just "you gotta deal with it through your manager now"
So I call bull on "if you do everything right you'll be fine", that's just manager speak for "I'm not taking the blame for forgetting to do something or not being bothered to do something"