Investment bank UBS has released a list of cities with highest average annual work hours as part of its ‘Global Wealth Management study’. There were two Indian cities — Mumbai and Delhi — among the top 10. In fact, Mumbai topped the list with 3,315 average annual work hours — that’s a whopping 12.8 hours a day if one assumes a five-day work week and 10.6 hours a day if it is a six-day work week. India’s financial capital's average was also 23 per cent more than Vietnam's capital Hanoi, the second city on the list. Some wondered if the