An attorney for the Red Onion restaurant chain refused to give a list of its employees to the Riverside Community Relations Commission, which is investigating reports of racial discrimination. Ralph Saltsman cited employees' rights to confidentiality, said subcommittee chairman Robert Bosic. But the attorney invited the subcommittee to visit the chain's Riverside restaurant-nightclub and interview employees on the job, Bosic said. Some blacks and Latinos have said that they were barred from Red Onion establishments in Riverside and Orange counties. Company officials have denied that they have any such policy.