[Excerpt] This Beyond the Numbers article updates a previous BLS Regional Report, “Labor market risks of a magnitude 6.9 earthquake in Alameda County,” that provided estimates of potential exposure to San Francisco Bay Area businesses and employees. This article analyzes the most damaged areas anticipated for that event—those areas with very strong to severe shaking on the Modified Mercalli Index (MMI VII or greater). We identify the businesses in these probable shaking zones and quantify the businesses, employees, and wages that are at risk.