Japan's antitrust watchdog plans to warn major automaker Nissan Motor Co. for unilaterally reducing payments to over 30 subcontractors, a source familiar with the matter said Monday.Nissan allegedly underpaid the companies by some 3 billion yen ($20 million) upon delivery of their services over an extended period, in violation of the subcontract law, the source said, with the Yokohama-based company admitting it was in the wrong.Nissan's illegal cost-cutting could have taken place for decades, the source said, with subcontractors likely accepting it over fears they could lose business with t…READ FULL ARTICLE