There are many drawbacks.
1. Take a look at KaoBei POYA. There are tons of exposés… Fruit reporters come to gather material and can report on 1001 Nights…
2. Conduct random checks of clock-in records. There are tons of people forced to “clock in for real but leave work on paper only” …
3. Salaries need to be checked too… Only PT’s 133 is followed; for the rest, they deceive wherever they can. A bunch of allowances are used to make up the standards.