Applicants for Staff and Administrator positions are required to submit a letter of interest. Cover letters and résumés are two of the most important documents you need to successfully complete your job search.Pima County Employment Application. Please read this information before completing the application. Applications will be considered incomplete without a resume and writing sample. Q) Do I have to fill out an application? Board of Supervisors, District 3 Vacancy Appointment Process. After emailing the acceptance letter, receive a start date from the recruiter. You've received a job offer, considered the terms of employment, and decided to accept it. Instructions on how to do so are included in the application.