Two workers died Tuesday in separate incidents at the Fukushima No. 1 power plant and the nearby No. 2 complex.
The fatality at No. 1 was first there since March, although there has been a rise in the number of industrial accidents at the site as Tokyo Electric Power Co. stepped up cleanup efforts and brought in more workers.
Tepco has said at least 40 workers were involved in accidents at No. 1 from last April to November, prompting labor inspectors last week to call for thorough preventive measures.