Arab groups say they will boycott involvement with the NSW Community Relations Commission unless its chairman, Vic Alhadeff, is expelled for controversial comments over the deadly conflict between Israel and Gaza.

Communities Minister Victor Dominello on Wednesday dismissed calls for Mr Alhadeff, who is also chief executive of the NSW Jewish Board of Deputies, to be removed from the role, saying "we all bring different perspectives to international issues".

Mr Alhadeff has refused to resign from the commission, saying "there is too much important work to be done". But critics say unless Premier Mike Baird intervenes, they have "no choice but to walk away" from the organisation, which promotes racial harmony.

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