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 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. This report covers the time period from March 12 – 18, 2010, during which time 48 new class actions were filed in these California state and federal courts. As a general rule, labor law class actions easily top this list as they usually account for more than 50% of the new class action filed during any particular week. Last week, only 13 new labor law class actions were filed, representing a meager 30% of the total number of new class actions filed, and those numbers carried into this week. Again, only 13 new labor law class actions were filed, representing only 27% of the total number of new class action filed during the past week. However, there were 18 new class action lawsuits filed alleging violations of California’s Unfair Competition Law (UCL), which includes false advertising claims, representing 38% of the total number of new class actions filed. The only other category to break the 10% threshold involved class actions against Toyota involving product liability claims, with 6 new lawsuits representing 13% of the new class actions filed during the reporting period.