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What are the requirements under the Asbestos Hazard Emergency Response Act (AHERA) for refresher training for a person who wants to "step down" his/her certification from contractor/supervisor status to worker status?

If such a person takes contractor/supervisor refresher courses on an annual basis, that person may perform in both the contractor/supervisor and worker roles. If, however, the person chooses only to take annual worker refresher courses, that person may continue to act in the role of an accredited worker but loses the ability to perform contractor/supervisor duties in the future.