A group of Osaka-based activists hunting for public records on Koreans who were forced to work in Japan during the war has helped uncover information on missing workers and bring closure to their families in South Korea.

The group says its efforts have been aided by the Japanese government's move to overhaul its pension records following a massive scandal in 2007 that involved lost records and payments.

Before and during the war, many Koreans were brought to Japan by force following the 1910 annexation of the Korean Peninsula and forced to work at private companies or serve in the Japanese military.