EVERY SINGLE CLIENT that sits in your chair, regardless if it is a NEW client, or a CURRENT client, they must all sign a contract.
This is in order for both you AND the client to be protected.
I would not recommend copying the DKW contract word for word, you will want to speak to an attorney to ensure based on your state and business your contract is legal.
Click for an example of a CLIENT CONTRACT
Click for an example of the NBR HOME CARE MAINTENANCE PLAN