What exactly should be in this type of contract? Well, firstly you need to be aware of any laws in your country regarding employing people. It is likely these laws will override your agreement so it makes sense to line them up so they match. Then you need to put the basics in there. This might include hours of work, what their role is and how much they are going to be paid. After this, it is a matter of adding some other clauses to protect both you and the employee. This could be to do with dismissal and other situations that might arise.
All the terms and conditions of the lease should be spelled out very carefully. This lease is very prone to disputes in court. The more specific your terms and conditions are the less chance there will be a problem later. You can find a great number of commercial lease agreement templates, both free and paid, in many websites on the Internet. Make sure that you take a look at several templates before you choose one as it will give you a better idea of how your template should look.