To assist class action defense attorneys anticipate the types of claims 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 time frame. This report covers the time period from December 3 – 9, 2010, during which time 38 new class actions were filed in these California state and federal courts. Of these, 20 class actions alleged employment-related claims, representing 53% of the total number of new class actions filed. The only other category to break the 10% threshold involved class actions alleging violations of California’s Unfair Competition Law (UCL), which includes false advertising claims, with 8 new filings, representing 21% of the total number of new class actions filed.