South Korea's Supreme Court on Thursday upheld decisions by lower courts ordering Japanese companies Hitachi Zosen and Mitsubishi Heavy Industries to pay damages to South Koreans for wartime labor.

The top court last week ordered Mitsubishi Heavy and Nippon Steel to compensate victims of forced labor during Japan's colonial rule of the Korean Peninsula.

Of the three rulings issued Thursday, the one against Hitachi Zosen was the first by the top court in a wartime labor lawsuit against the engineering corporation.