A career change cover letter accompanies a CV. The cover letter is often the deciding factor as to whether the prospective employee is called in for an interview. It is not necessarily read until the candidate reaches a short list. Then it is vital to present a good career change cover letter, to prove writing and reporting skills. It is a good idea to personalize each cover letter for each employer, but if a worker is sending out many applications this is not always feasible. Instead, try to tailor each cover letter to a specific industry or field if using bulk postage for applications.