To assist California class action defense attorneys in anticipating the claims against which they may have to defend, we provide weekly, unofficial summaries of the legal categories for new class actions 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. Labor law class action cases generally top the list, and this past week was no exception. This report covers the time period from April 13 – April 19, 2007, during which time there were approximately 35 new class action lawsuits – a relatively low number of new class action filings by California standards. Of these new class actions, labor law class action cases accounted for 40%, with 14 new filings. Unfair competition law (UCL) class action claims, which include false advertising class action cases, were the only other category to meet the 10% threshold involved with 9 new cases (26%).