contributory

adjective | \ kən-ˈtri-byə-ˌtōr-ē \ | con·trib·u·to·ry
  1. : characterized by or making contributions to a common fund or enterprise; specifically : of, relating to, or being an employee benefit plan to which both employers and employees make contributions : of, relating to, or being an employee benefit plan to which both employers and employees make contributions

  1. : helping to bring about an end or result contributory infringement