What does it do/what's its function???
We have a review board, of sorts. All the department heads (quality, safety, both production managers, purchasing, finance, engineering/maintenance, and HR), with the plant manager are on it. The team is called a "steering" committee, and its job is to perform management review, per ISO 9001. That is the base of its scope, but there are other items reviewed besides this. All complaints and customer, supplier, and production non-conformance issues, and all CA/PA/CI is reviewed with this committee.
We don't do it, but I've seen similar committees that had hourly employees as a part of this team, as well.