Paying for time...

is a waste of money and invites / encourages inefficiency!
What possible incentive could a person have when he is assured a certain amount of money per hour / day for doing a job?
Has it ever occurred to you that those people or professions are the least efficient ones in obtaining results? Their objective is not to solve problems but to keep the problem going, going, going on and on.
Visualise this: See a man pulling a cow by its horns and another pulling the cow by its tail.
Who is sitting at the udders and milking the cow?