This brochure has been designed to ease the application process and help to prepare you for a career with the County of Sacramento… STEP 1: Finding the Job!! Typically, an Employment Application Form (STD 678) and resume will be the most common requirements for an application package.You can add a resume and cover letter. But be concise in the 678 still. Completing the Application Materials….. 1. Complete the application and supplemental questionnaire (if required). Read the following instructions carefully before completing this application. Please complete the application on a computer or print in ink. Here's how to write a job application email. First, write a clear subject line.