The step comes after Japan this month launched new visa statuses to attract more foreign workers and ease the impact of the nation's shrinking workforce and population.

Operator TEPCO (Tokyo Electric Power) has previously used highly skilled foreign engineers in Fukushima, but generally refrained from accepting foreign labourers in work crews there -- in part because the jobs requires strong command of the Japanese language to understand technical instructions.

But the government's new visas are available to foreigners with strong Japanese language skills in 14 sectors suffering critical labour shortages such as construction, farming and elderly care.

"The (visa) system is designed for people with certain skill sets and language skills. We will accept foreigners who are industry-ready," TEPCO spokeswoman Mayumi Sugahara told AFP.

Roughly 7,200 people work at the Fukushima plant at any given time, and Sugahara said TEPCO has not had difficulty attracting enough workers.

But Japan's construction sector as a whole has long faced a severe labour shortage, despite earlier efforts to loosen visa requirements for foreign workers.

Adding to the labour crunch, Tokyo is currently experiencing a construction boom ahead of the 2020 Olympic Games.

The government hopes to attract roughly 350,000 foreign workers in the 14 selected sectors over the next five years.

The new visa system has been viewed as as a policy shift away from Japan's traditional strict immigration programme.

The Fukushima nuclear plant suffered a catastrophic meltdown after an earthquake and tsunami struck in 2011. It was the worst nuclear accident since Chernobyl.