Glencore chairman Simon Murray 'not appointed through independent process', says shareholder group Pirc Pirc, the influential shareholder group, is worried about the way Simon Murray was given the role of chairman last year, as well as his other responsibilities. It told investors to abstain from voting on whether former BP chief executive Tony Hayward should stay on the board, as he is still involved in legal proceedings over the oil giant's Gulf of Mexico spill, raising concerns over his "track-record." Pirc worried that the maximum rewards under the long-term incentive plan (LTIP), at 500pc of people's base salary, exceed best practice. Neither Ivan Glasenberg, Glencore's billionaire chief executive, or his CFO take part in the LTIP. The company is understood to comply with corporate governance regulation. The recommendations from Pirc came as Glencore faced questions from MPs over its tax arrangements in Zambia, used as a case study for emerging economies. Glencore, defending its record at a committee session, said its effective tax rate there was above 50pc.