FAQs: Dose Reconstruction

Once a claim is filed under The Act, the Department of Labor (DOL) determines if the employee worked at a covered facility during a covered time period and has a qualifying health condition. If the health condition in the claim is cancer, the case is then sent to NIOSH for dose reconstruction. Dose reconstruction is the scientific process of estimating a worker’s past exposure to radiation. It uses exposure monitoring and other information to determine what levels of radiation the workers were exposed to while they worked at a facility.

Once the dose reconstruction is completed by NIOSH, the case is returned to DOL. The information from the dose reconstruction is used by DOL to determine the probability that a worker’s cancer was “at least as likely as not” due to the employee’s occupational exposure to radiation during employment at a covered facility.

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Dose Reconstruction