Staff at Complete Utility Solutions in Rotherham are giving up their beds for the night and spending it under the stars for the Cathedral Archer Project in Sheffield.
They hope to raise awareness of homelessness and rough sleeping while raising cash for their efforts through sponsorship.
The Cathedral Archer Project is a day centre for homeless adults.
It offers food, support services and signposting to other agencies able to help those without a roof over their heads.
Up to 80 people use the centre every day.
To sponsor those taking part in the sleep-out event visit www.justgiving.com/CU-SleepOut/