After a sheet metal plant in Connecticut ordered its employees to speak only English on the job because of safety concerns, five Spanish-speaking workers decided to take the company to court. The employees, who are legal immigrants, say the rule amounts to discrimination and actually makes the workplace more hazardous. "I can think of no good reason for them to institute this policy," said Steven Jacobs, the lawyer for the workers who are suing GC Industries in Deep River, Conn. "It's offensive to people who speak Spanish and is potentially dangerous. It inhibits them from communicating in their native tongue...