A manga artist who has been involved in decommissioning work at the disaster-hit Fukushima No. 1 nuclear plant has highlighted the need for effective deployment of skilled workers in parts of the premises that still have high radiation levels.

Kazuto Tatsuta, 51, also said in a recent interview that he feels progress has been made since the Tokyo Electric Power Co. complex suffered triple meltdowns after the March 11, 2011 quake and tsunami disaster in an operation that will take decades.

"It is not hard to collect a large number of ordinary workers, but lower wages resulting from multilayered (subcontractors) is a problem that could, in severely bad cases, have an impact on their motivation," Tatsuta said, noting that about 7,000 people work at the plant every day.