The planning and implementation of an automatic external defibrillator (AED) intervention in the workplace necessitates a comprehensive approach to program development. 2. Initiation of an AED intervention program at the worksite, based on an informed decision, requires each company to conduct a detailed assessment of need. 3. Prior to initiating an AED intervention program, appropriate resources should be consulted to examine national, state, and local law provisions and legal factors governing AED use in each specific community. 4. Essential components of an AED intervention program include: the combined cardiopulmonary resuscitation and AED use training program; written policies, procedures, and medical directives; a plan for the purchase, maintenance, and location of the AED equipment and supplies; an integrated emergency response plan; and an ongoing quality improvement process.