If you're a salaried or hourly employee, you aren't paid for your output, you are paid for your time, with minimum expectations of productivity.
If you complete all your work in an hour... you still owe seven hours based on the expectations of your employment agreement, in order to earn your salary and benefits.
If you'd rather work in an output based capacity, you'll want to move to running your own contacting business in a fixed-bid type capacity.