be working overtime

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be working overtime

1. To be working more hours at one's job than one is scheduled or required to do. I've been working overtime all week to get this project done by the deadline.
2. To be putting forth a lot of effort to do or accomplish something. Everyone's air conditioners have been working overtime during this heat wave. Mom has been working overtime to get more signatures on her petition for the city council.
See also: overtime, working
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

be working overtime

If someone or something is working overtime, they are working very hard in order to achieve something. The team had been working overtime to improve the party's image. People need more sleep when their immune mechanisms are working overtime to fight off infections. Note: The literal meaning of this expression is that someone is spending extra time doing the job that they are employed to do.
See also: overtime, working
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

be working ˈovertime

(informal) be very active or too active: There was nothing to worry about. It was just her imagination working overtime.
See also: overtime, working
Farlex Partner Idioms Dictionary © Farlex 2017
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References in periodicals archive ?
In other words, nurses may be working overtime or long hours in an effort to prevent adverse patient events; therefore, this effort may have resulted in the occurrence of fewer adverse patient events.