Download a free Illinois nondisclosure agreement template here to ensure your document fully complies with the state's legal requirements. This is an agreement that is used to protect the disclosure of information that a party deems confidential or proprietary.Employee Non-Disclosure Agreement. NDAs with employees are generally legal in Illinois. For the purposes of this Agreement,. Disclosure agreement needs to be written in a way that makes it enforceable. This paperwork will focus upon the call for confidentiality as defined in the Health Insurance Portability Act of 1996 and HIPAA Omnibus Rule of 2013. Get a free confidentiality agreement template, or NDA, that you can quickly customize. Sign up now for custom legal forms, contracts and documents. Disclosure agreement (NDA), also known as a confidentiality agreement, is a legal document.