An employee assembles a Hyundai Motor vehicle on the production line at the company’s factory in Asan, South Korea.

Four years ago, the 'moderate' leader of Hyundai Motor's often-strident labor union punctuated a speech to members by chopping off part of his finger with an ax.

Lee Kyung-hoon's dramatic gesture - a show of resolve to heal internal dissent amid stalled wage talks - succeeded by one measure: 2011 was one of just four years in the last 28 when Hyundai's Korean factory workers didn't walk off the job.