It comes as no surprise that most working Americans experience stress or anxiety in their daily lives. And the Anxiety Disorders Association of America (ADAA) 2006 Stress & Anxiety Disorders Survey backs that up. A certain amount of stress and anxiety is normal at work as well as at home. However, persistent, excessive, and irrational anxiety that interferes with everyday functioning is often an indication of an anxiety disorder. Read on for how how stress affects American employees.