While engineering simulation is used widely in some companies and industries, almost all companies would benefit from increasing the use of simulation and there are industries where simulation is not widely used. Also small/medium sized companies are less likely to make use of simulation than large companies. The NAFEMS Business Impact Working Group has identified a number of ways to justify increasing the use of engineering simulation. Roger Keene will go through those different methods and offer advice on how to go about convincing senior management of the value of engineering simulation.