She spent long hours at her desk and enjoyed her work after a fashion.

If you spend many hours a day at your desk or workstation, give some thought to the setup.

Then he spent some time at his desk over certain intricate formulas.

When was the last time you spent a solid month at your desk?

I want to spend a little time at my desk, see what's piled up.

A normal day is spent at my desk glued to a computer.

He spent several hours at his desk on Tuesday.

I might even wish you spent more time at your desk.

He'd spent hours at his desk going over each note, every scrap of information.

He spent 10 to 13 hours a day at his writing desk.