an eager beaver

eager beaver

One who is industrious and enthusiastic (perhaps annoyingly so). Give that big project to the new girl, she's a real eager beaver. Aren't you an eager beaver, getting to the office an hour early.
See also: beaver, eager
Farlex Dictionary of Idioms.

an eager beaver

INFORMAL
If you describe someone as an eager beaver, you mean that they are very enthusiastic about work and want very much to please other people. There are always eager beavers, people who stay behind after the talk to ask penetrating questions. Ed was the first to arrive at the office, the eager beaver! Note: Eager-beaver can also be used before a noun. If fraud became an issue, he might interest an eager-beaver lawyer in the case. Note: You usually use these expressions to show that you find someone's behaviour foolish or annoying. Note: Beavers are often associated with hard work, as they spend a lot of time building shelters and dams (= walls across rivers) out of mud and wood.
See also: beaver, eager
Collins COBUILD Idioms Dictionary, 3rd ed.

an eager beaver

a person who is very enthusiastic about work. informal
See also: beaver, eager
Farlex Partner Idioms Dictionary

an eager ˈbeaver

(informal) a person who is enthusiastic about work, etc: She always starts work early and leaves late. She’s a real eager beaver.
See also: beaver, eager
Farlex Partner Idioms Dictionary
See also:
  • eager
  • eager beaver
  • eager-beaver
  • beaver-cleaver
  • work like a beaver
  • work like a Trojan
  • be (as) fresh as a daisy
  • busy beaver
  • busy little beaver
  • be spoiling for (something)
References in periodicals archive
Barrister Sultan Mehmood Chaudhry admired his willingness regarding joining the party and said that an eager beaver and visionary worker would be available for the party in shape of Liaquat Ali Khan Magray.
Famous Kashmiri businessman Magray announces to join PTI
Thus far, Obama has been an eager beaver on this task.
The world to promise a nuke terror-free environment, search begins for a legacy
To be scrupulously fair,most of us aren't that keen on an eager beaver from Labour, the Lib Dems or Plaid Cymru coming round either.
Don't ring me up if you want my vote at the ballot box
Larry: My goodness, you certainly are an eager beaver to get general semantics out to the public.
Bucky the time-binding beaver
It is going to be good to be an Eager Beaver but pick your projects and manage your time.
Your Stars
Jussi Jaaskelainen also denied him when he let rip with another fierce attempt and Larsson was an eager beaver in helping Stephen Kelly in defence.
Football: Larsson backed by Bruce
In the DVD Peep's New Friends, Peep, Chirp, and Quack explore the wide world of animals, meeting an eager beaver, three shy bunnies, a frisky cat, a colorful butterfly, and Hoot the Owl.
Peep's New Friends