My job responsibilities involves everything from overseeing key projects such as mergers and acquisitions to understanding new businesses for investment. At times have to make decisions on behalf of the chairman.The daily routine is rarely the same from day to day, and varies significantly depending on the industry you work in and the size of the company. Typical duties include managing a complex schedule for the CEO. That includes booking meetings, conference calls and travel. Might need to take meeting minutes, write reports, prepare correspondence and prioritize items that need attention.