Most industries, such as finance and multinational corporations, have 9 to 5 working hours. A newcomer has to gather experience in the first few years to get into the swing of things. From January through May, when the majority of tax documents are filed, this area is at its busiest. The rest of the months are fine. Spending a few more hours here and there if you're happy and comfortable at work won't make a big difference. As a result, it is dependent on the businesses for which you work.