A letter of separation explains to an employee why they no longer work for a company and their next steps. Here's how to write one (with two samples).You may find a sample letter here. Waiver of Employment. A termination and release agreement is a contract that is used when two parties mutual agree to end a legal contract. If you disagree you can write a separate letter to them or you can check with government departments of employment to see if they can help you. Download this free document that provides 6 different involuntary termination letter options as well as a detailed Release form for every firing situation. The Supreme Court Commission on Access to Justice has approved the following forms. All Illinois Courts must accept these forms. One of the things that Illinois law exempts you from is the need to provide a reason for the lease termination.