National Australia Bank is dragging the chain on staff pay rises. The Financial Sector Union said that last week NAB had made "the lowest pay offer among the big four banks."The FSU said that NAB had proposed a rise of "between two per cent and 3.5 per cent, depending on performance", for staff classed as groups one and two, ie, those at the lowest levels.The bank proposes no rise in basic pay for more senior staff, those in groups three and four.In a posting on its website, the FSU branded NAB's response as "mean and disappointing." The FSU said NAB also wanted to "delay our pay increases from October 2013 to January 2014."And the bank aims to "claw back the additional superannuation that is currently paid above the government's minimum employer contributions."The union also asserted "there was nothing on consultation, fewer rights, but more obligations on each of us around leave entitlements, and a whole bunch of penny pinching changes to conditions of employment."