As a resources to California class action defense attorneys, we provide weekly, unofficial summaries of the legal categories for new class action lawsuits filed in California state and federal courts in the Los Angeles, San Francisco, San Jose, Sacramento, San Diego, San Mateo, Oakland/Alameda and Orange County areas. We include only those categories that include 10% or more of the class action filings during the relevant timeframe. This report covers the time period from September 28 – October 4, 2007, during which time 62 new class action lawsuits were filed in these California state and federal courts. Class actions asserting employment law violations generally lead the list, often by a wide margin, and this past week was no exception. During the time period at issue, 36 of the new class action filings involved labor law claims (58% of the total number of new class action cases). The only other category of class actions to break the 10% threshold involved new antitrust class action filings, which came in a distant second with 9 new class action cases (15%).