JAMES A. BRIMSON is President of Activity Based Management-International, Inc., an international confederation of consulting, training, and software companies that specialize in activity-based management. He is the author of Activity Accounting: An Activity-Based Costing Approach (Wiley), coauthor of Driving Value Using Activity-Based Budgeting (Wiley), and coeditor of Cost Management for Today's Advanced Manufacturing, The CAM-I Conceptual Design.

JOHN ANTOS is a management consultant specializing in activity-based management. He teaches activity-based management, activity-based budgeting, finance and accounting for non-financial executives, modern cost accounting, as well as other financial courses. He is the coauthor of Driving Value Using Activity-Based Budgeting (Wiley).