Example: "Hello, I'm a former employer of ABC and I'm very interested in the job of production manager that you have advertised. Writing a cover letter for a previous employer requires highlighting your existing knowledge, valuable skills, and showcasing how you've grown since leaving.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. The document is a sample cover letter for returning to a previous employer. Learn how to write effective resumes and cover letters, view sample resumes and cover letters, and get tips for completing job applications. This letter is especially helpful if you're applying to a traditionally unrelated industry from your previous job. It does the following:. A cover letter is structured like a business letter as shown in the samples. With New York's phased re-openings underway, many of you may be starting to think about applying to jobs.