To assist California class action defense attorneys anticipate the types of class action against which they will have to defend, 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 October 23 – 29, 2009, during which time 56 new class action cases were filed in these California state and federal courts. Labor law class action generally top the list by a wide margin, often accounting for more than half of the total number of new class actions filed. This past week, class action alleging employment-related claims again topped the list with 24 new class action lawsuits (43% of the total number of new class actions filed). The only two other categories to break the 10% threshold again involved class actions alleging violations of California’s Unfair Competition Law (UCL), which includes false advertising claims, with 14 new class action lawsuits (25% of the new class actions filed during the reporting period), and class actions alleging antitrust violations, with 8 new class action lawsuits (14% of the new class actions filed during the reporting period).