Mr Willard said two meetings of "concerned" members had already been held, with a New Zealand Chamber of Commerce representative at one.
He said the main issues they wanted addressed by the chamber included details of its recent review and who was consulted, how Mr Gordon's dismissal was handled, whether the employment dispute would cost the chamber money and the general lack of information to members.
"Members who are concerned just want to know what's happening with the chamber and why this has happened," he said. "Some of the members are absolutely teed off big time."
He said Mr Gordon was not involved in the group and those who had signed the request included some who supported Mr Gordon and some who didn't. The purpose was simply to ensure a strong chamber for the future, he said.
"We're not on any particular witch hunt but we do want to know what's happened and why it's happened."
Both Mr Gordon and chamber president Kathy Hawker declined to comment.
However, Mrs Hawker sent an email to all chamber members last week.
"I refer to the recent local media coverage of the departure of the long-serving CEO of the chamber, Roger Gordon, which I understand has created uncertainty and some anxiety among some chamber members.
"I have been advised that some members of the chamber have had a private meeting to discuss the chamber. During this meeting such members did not have the benefit of the chamber's side of the story.
"Unfortunately, as the issues surrounding Mr Gordon's employment with the chamber are currently before the Employment Relations Authority, it is not appropriate for the chamber to comment on the matter any further at this stage," she said in the email.