What are the hours of someone working as an investment manager?
Working hours may also depend on which markets you cover and the timezone you are located in. If you cover the Asian market which is GMT +5 on average or whether you cover the US markets which are GMT - 4.
An investment management firm typically has 'market' hours. Employees may get in early in the morning (typically 7-8 am, before markets open at 9 am), and can leave at around 6-7 pm (provided that they've completed pertinent tasks and may vary with individual companies).
Generally there isn't a drastic difference in the number of work hours between a junior employee vs. a senior manager, but this may also vary depending on firm culture and distribution of workload.