CalHR provides a job application package checklist which can be found on CalCareers in the Additional Documents section of the job posting. Cover letters are a way to create a personalized statement that explains how you as the applicant meet the needs of the employer.Sample Cover Letters. First time applicant to entry level student state job, wondering how to write one. Like what appeals to the people reading the application? As a hiring manager, I say yes. When I submit applications, I always include one. Your cover letter should be no longer than 1 page consisting of 3-4 paragraphs.