Writing a cover letter for a previous employer requires highlighting your existing knowledge, valuable skills, and showcasing how you've grown since leaving. The document is a sample cover letter for returning to a previous employer.It is imperative to show your interest in the position and the company. Example: "Hello, I'm a former employer of ABC and I'm very interested in the job of production manager that you have advertised. We'll tell you why you might be asked to reapply for your current job and how you can succeed. Plus we've provided some sample cover letters to use. When you draft a cover letter for a new job with the firm, emphasize your fellowship with the company and its procedures. To create an applicant account, go to Career Pages website and click on the Sign In tab, and then Don't have an account?