How do I submit an application? It is important to submit your application with complete and accurate information.Definition of annual income, how the housing authority verifies income – overview, information regarding verification of specific income type. How to fill out the Contra Costa County Employment Application Form? 1. Read the instructions carefully. 2. Additionally, all self-employed tenants and applicants will be asked to complete the self-employment certification form, and to sign form IRS 4506-T. Welcome to Contra Costa County's on-line application process! The Welfare-to-Work (WTW) Program is a comprehensive Employment and Training Program designed to promote self-sufficiency. To complete an eviction we require the original writ, Sheriff's fee, and a signed Contra Costa County Sheriff letter of instruction for eviction located above. Newly filed summary data may not appear for up to 48 hours.