To aid defense attorneys in anticipating the claims against which they may have to defend in California, 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. Employment law class action cases generally top the list, often by a wide margin, and during the past that was particularly true. This report covers the time period from March 16 – March 22, 2007, during which time approximately 59 class action lawsuits were filed in these California state and federal courts. Labor law class action filings accounted for nearly half, with 27 new lawsuits (46%). The only other categories of cases to break the 10% threshold involved unfair competition law (UCL) claims, which include false advertising class action cases, and securities law claims, each of which had 7 new class action filings (12%).