Abstract: A system and method whereby similarly situated plaintiffs can efficaciously process a large volume of legal actions requiring mass customization and standardization in a narrow legal area against similarly situated defendants on an unconsolidated case by case basis (or “Mass Action Litigation”) through a technologically and organizationally unified operational structure. The present invention joins the specificity and craft of the legal profession with a business process support structure through technology and standardization of policies and processes to enable Mass Action Litigation. In each distinct class of Mass Action Litigation, an automated rule based decision engine pushes individual instances of litigation through an instance specific lifecycle workflow contemplated on a jurisdictionally specific basis to achieve an optimum result.