Rio Tinto PLC (RIO) faces calls from pension funds and shareholders to amend a loophole in its executive remuneration policy that could deliver performance bonuses to management even in bad years for the mining company, The Age reported Tuesday. Investors have told Rio Tinto they are concerned a change in a long-term incentive known as the performance share plan has significantly improved the chances of top executives being awarded bonuses, which can amount to 190% of their salaries, the newspaper said, citing an unnamed investor. The Age said a spokesman for the company declined to comment but said consultations with shareholders were ongoing. In a speech in London last week, Rio Tinto Chairman Jan du Plessis urged an end to excessive remuneration for corporate executives. "It is absolutely clear that the spiral in executive remuneration we have seen over the last two decades simply cannot continue," Mr. du Plessis said. Newspaper website: http://www.theage.com.au Write to Dow Jones Newswires at firstname.lastname@example.org Copyright (c) 2012 Dow Jones & Company, Inc.