Hi Karen. You don’t mention it here, but where are you in the “discussions” with these companies that are interested in corporate wellness? If you are only in the “interest” phase of discussions with a company considering corporate wellness, you may consider preparing a “proposal” instead of a contract. I find that a proposal is a lot less formal than the contract, will serve to explain things in plain-English, and can later serve as the basis for your contract. By giving them a proposal instead of a contract initially, this also allows the client to open a dialogue with you about exactly what their needs are and the services that you can provide to meet those needs BEFORE you get into the formality of a contract. By doing that, the contract (if it truly reflects your discussions and your agreed upon proposal) should be a piece of cake.
I hope that this helps, and good luck!