In order to assist class action defense attorneys anticipate the cases against which they will have to defend in California, 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 21 – September 27, 2007, during which time 44 new class action lawsuits were filed in these California state and federal courts. Labor law class action cases generally lead the list by a wide margin, and this proved true yet again as 25 of the new class action filings (57% of the total number of new class actions) alleged employment claims. Class actions under California’s unfair competition law, which includes false advertising claims, and new antitrust class action filings came in a distant second with 5 new class action cases each (11%). No other category cracked the 10% threshold.