Staffing agency Goodwill Group Inc. apologized Friday for the certification fraud involving its nursing-care unit Comsn Inc. and announced that the firm's president, Koichi Higuchi, will resign to take the blame for the scandal.

But Goodwill Group Chairman and CEO Masahiro Origuchi said he will remain in his position to continue running the group.

"We did everything to protect our customers, and never meant to do something that would be considered illegal," Origuchi said. "I know that it may not win the public's understanding, but for Goodwill to continue working on our mission, I need to stay in my position."