earn your corn

earn (one's) corn

To be worthy of the money that one is being paid. I think you should hire the most experienced candidate because she'll definitely earn her corn.
See also: corn, earn

earn your corn

BRITISH
If someone earns their corn, they are successful and therefore justify the money that has been spent, for example on employing or training them. New striker, Steve Menzies, earned his corn with a last-minute goal. Managers earn their corn in these difficult circumstances.
See also: corn, earn

earn your corn

put in a lot of effort for your wages. British informal
See also: corn, earn
References in periodicals archive ?
If he doesn't take the Everton job I think I would tell Unsy to go and manage somewhere and earn your corn," said Moyes.
If he doesn't take the Everton job, I think I would be telling Unsy to go and manage somewhere and earn your corn," said Moyes.
Moyes, promoted to the big time after a spell at second tier Preston, said ahead of tomorrow night's clash: "I think now if he doesn't take the Everton job, I would be telling Unsy to go and manage somewhere and earn your corn.
Forget your political ambitions and earn your corn, nothing else will be accepted.
Ask any manager or coach, you earn your corn out on the training ground and that is where you get the buzz.
It is now when you earn your money, now when you earn your corn, as they say.
As coaches it is where you earn your corn and learn to coach," added Davies.