AWB chairman, Brendan Stewart, has today received and accepted letters of resignation from Colin Nicholl, from Western Australia, Xavier Martin and Rodger Schirmer from NSW, and Russell McKenzie from Victoria.

The four directors had opposed the constitutional reform resolutions which were recently approved by A class shareholders.

Mr Stewart said the group has acted responsibly in accepting the majority decision of shareholders.

"This is a principled decision that enables AWB to move forward with a united board and management team into a new era as a fully commercial company that can compete on a level playing field with domestic and international grain traders," Mr Stewart said.

"It is important that all parties now leave any differences in the past and move forward into the future where AWB can build loyalty with all its suppliers and customers whether they voted for or against the resolutions by offering the best price, the best service and security of payment."