As a resource for California class action defense attorneys, we provide weekly, unofficial summaries of the legal categories for new class action lawsuits filed in the California state and federal courts located in 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 preceding week. This report covers the period from January 23 – 29, 2009, during which time 48 new class action lawsuits were filed. Labor law class actions generally top the list of new class action filings by a wide margin. During this report period, 21 new labor law class action lawsuits were filed, representing 44% of the total number of new class actions filed during the past week. Two other categories satisfied the 10% threshold: class actions alleging violations of federal antitrust laws, with 13 new lawsuits (27%), and class actions alleging violations of California’s Unfair Competition Law (UCL), which includes false advertising claims, with 9 new filings (19%).