It also forced him to up-grade the competence of his assistant who now handled things on his own on Fridays. This arrangement also made his work easier. There are plenty of other ways to negotiate time, too. Another clever way to make more money on the job is to gamble. Discuss these compensation items with your boss at review time, or any time there is a change in your company's operating procedures.
Bosses like to reward excellence.
You want a specific dollar bonus for this type of work. Sometimes these things can even get you a raise outside the normal channels. For instance, I worked with a client who had a boss who was receiving criticism from the board for the high turnover in the company. The boss's compensation was tied to the overall profitability of the organization. High turnover wreaked havoc on profitability because the organization was constantly training new people and cleaning up messes from people who dropped the ball when they left in the middle of a project.