You have to be ready to honor your contract!
Prepare to go to work on the date and the hours of the said contract. Just make sure you are 5-10 minutes early at the right place of contract, have the proper attire, and advertise yourself as a candidate for the Staff Renter Agency. Don’t forget to confirm your hours at the end of the contract. The client will most likely have you sign an attendance sheet to ensure the hours worked.