There is no "official" format for cover letters. With each résumé you send out, always include a cover letter specifically addressing your purposes.Summarize how your qualifications meet the needs of the employer (match your skills to specific requirements in the job description). A cover letter is a three- to four-paragraph memo to employers that explains your interest in the job and company as well as your qualifications for the role. Learn how to create a competitive resume and cover letter one step at a time during our FREE interactive Resume and Cover Letter presentation. Learn how to prepare a dynamic resume and cover letter to set you on the right track to getting your dream job. Always write a cover letter from scratch. Resumes should be typed and one page if possible. Applying for a job with Maricopa County at jobs.maricopa. Gov is a simple online process.