Too me its depends how value yourself and how the company values u,For my case as IT software i can come in office late as long as I deliver my tasks then they are ok with it.
Anyway my working time is 9.30 but i always arrive at 10.30am to 11 been doing it for years.Its depends on the nature of work and your discipline towards the work.We are in the software industry We have to work countless hours.A HR tried to do the same doing a clock in system (Web) i didnt even bother to login and clock,I never get any warning letter or any sort and my CEO will just come and buy me coffee and ask me to tried to be early.





Value yourself more then u value your company.

Another piece of advise value your clients more then your company.That is how you cari makan.