like sumbeams say.. asian culture wan to put more time in completing a task but western is work smart. My cousin work in US in an IT firm i saw her goto office like very happy. In at 10am out at 5.30pm sharp..

Same goes with the company next to my mum office... A western IT firm.. u would not see any light in the office after 5.30pm after 5.30pm the staff was like vanish into thin air..

But i found out mostly software developer have to work more without OT