Zielinski even forced him to go out stealing when he lost his agency jobs.
Footage released by officers shows the man cowering under a workman's jacket in the corner of an attic after he was forced into a life of servitude by Edward Zielinski.
Detective Sergeant Mike Ebbins, who led the investigation, said: 'The first victim was made to work up to 20 hours a day from 8am to 4am with only limited breaks earning only £10 a week for his efforts.'The other victim was the cash cow for Zielinski so was allowed access to a bedroom and avoided being assaulted.'But in both cases Zielinski exploited them for his own financial interests.
He saw an opportunity to make money out of vulnerable Polish men.
After being beaten with a plank of wood last January, he managed to escape and lived on the streets before ending up in a detention centre in Gatwick.
Months later, Nottinghamshire Police's modern slavery team was made aware of the man and he exposed the full horror of Zielinski's crimes.