do your bit

do (one's) bit

To contribute work to that of others in a group. If you don't do your bit with the slides, our presentation will never be finished on time.
See also: bit
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

do your bit

make a useful contribution to an effort or cause. informal
The exhortation to do your bit was much used during World War 1, but the expression was current in the late 19th century.
See also: bit
Farlex Partner Idioms Dictionary © Farlex 2017

do your ˈbit

(informal) do your share of a task, help a cause, etc: Everyone is expected to do their bit to make the business successful.In reusing this old paper I’m doing my bit for conservation of the rainforests.
See also: bit
Farlex Partner Idioms Dictionary © Farlex 2017
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References in periodicals archive ?
I've done my bit, I've been Donna for the last few days - now it's your turn to do your bit. And he wasn't doing his bit.