If I start a new job and I'm asked to do some work for a client. The company bills the client in 15min increments, I spend time learning my companies' setup, where things are, etc... I end up billing the client for "2 Hours". Now as I improve my skills each subsequent time I do the same or a similar task for a client it should take me less time. But this means as time goes forward I would be able to bill less hours for the same work. Now, I have to do more tasks to fill in the empty space created by the shorten work time.
Do I continue to bill clients for 2 hours for that same/similar task?
It seems like billable hours punishes those employees who are "faster" If I can do 2 hours of Bob's work in 15 minutes, I should be able to
A. Leave for the next 1:45 B. Bill 2 Hours, and spend the next 1:45 working on other billable work