As a resource for California 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 14 – September 20, 2007, during which time 48 new class action lawsuits were filed in these California state and federal courts. As is generally the case, employment law class action cases once again led the list of class action filings with 15 new lawsuits, representing 31% of the total number of new class actions, but that percentage is down significantly from its lasgt week, when 62% of the total number of new class actions filed involved labor law claims. Class actions under California’s unfair competition law, which includes false advertising claims, came in a distant second with 7 new filings (15%), followed by five (5) new antitrust class action filings (10%).