To assist California 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 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. Labor law class action cases generally top the list, with the “competition” often running a distant second. Yet again, employment-related class action cases topped the list of weekly class action filings. This report covers the time period from May 4 – May 10, 2007, during which time approximately 47 new class action cases were filed in the California state and federal courts listed above. Employment-related class actions accounted for 45% of these cases, with 21 new cases. No other class action category satisfied the 10% threshold for this list.