"I overworked" is a correct and usable phrase in written English.
It can be used to express that you have done too much work, for example: I overworked this week and need some time to rest.
"I overworked a lot of good men.
So I overworked some teams early on, and that led to an early lesson around asking for help.
"The worst thing that could have happened would be if I overworked him the first day and made him sore," Schaefer said.
"I overworked him and got him wrong.
"I overworked; [now] I work better, and I am much happier as a result," he says.
"Sometimes I overwork myself," she said.
The problem is that I'm overworked enough I don't have the time to write grants right now and so that's where it kind of fell flat.
"I noticed last year for the first time I felt fatigue and felt like I had overworked and kind of burned out at the end of the year.
In order to investigate students' perceptions on the feasibility of starting a new business, the following questions were included in the survey: (1) "It would be very hard to do"; (2) "I am certain that I would be successful"; (3) "I would be overworked"; (4) "I know enough to start a business"; and (5) "I trust myself".
"I keep telling my boss that I'm overworked.
