A British private equity company has called in one of the leading US union-busters to stop workers at one of the country's best-known upmarket crisp producers, Kettle Chips, joining a trade union. The California-based Burke Group has been engaged by Lion Capital, owners of Kettle Foods, to dissuade the 340 workers at their Norwich factory from joining Unite, the country's largest union. Workers are balloting today on whether to join. Some 40% of the workers are migrants from eastern Europe… The company…said: "We are very proud of our workforce and continue to believe passionately that direct engagement with employees in the spirit of mutuality is in the best interests of our employees and shareholders." [also refers to Omega Training (part of Burke Group)]