The Department for Work and Pensions will seek to recoup £4,400 claimed illegally by a woman who was paid incapacity benefits while working.
Ursula Clayton of Wroxall Drive, Grantham, admitted failing to notify a change of circumstances affecting entitlement to social security benefit.
Clayton, 51, had been claiming incapacity benefits since January, 2008 but began working as a cleaner in August, 2011. She claimed the benefits while working until December 1, 2012.
The court heard Clayton did not think she had to report a change to her circumstances while earning less than £90 a week.
However, when she took on more hours and earned more money, she still did not report the change.
Rory Macmillan, defending, told the court Clayton suffers from a bone condition, arthritis and depression, adding: “She does get into a muddle about a lot of things.”
Mr Macmillan denied Clayton ever set out with the intention of benefitting illegally.
He said: “She had no intention of breaking the law. She has never done so in the past and will never do so in the future.”
Clayton, who has since given up her job, was sentenced to a conditional discharge and told she does not have to pay any costs or a fine.
Chairman of magistrates Mr Stewart said the sentence took into account the money is already being recouped.
He added: “We accept you have learned your lesson and this will not happen again.”