TOKYO (AP) -- The operator of Japan's damaged nuclear power plant says six workers who may have exceeded the government's radiation exposure limit aren't showing any immediate health problems -- but that they'll need long-term monitoring.
The government says the six may have joined two others in being exposed to more radiation than allowed while working at the plant.
Three are control room operators, and the other five worked to restore power that was knocked out by the March earthquake and tsunami.
All eight have been transferred to desk jobs.
The health and labor ministry today released the preliminary results of tests on how much radiation they had been exposed to.
Soon after the disaster, the government raised the radiation limit to two and a-half times what it was earlier, so workers could tackle the emergency.
The health ministry says at least 90 other workers have exceeded the earlier limit.