A traffic stop of an employee of a real estate developer has led to questions about the legality of some of the workers on one of his projects. State, O’Fallon, and St. Charles County officials have told Hennessey Development they want to see company payroll records. Hennessey is building a $20 million publicly-financed housing project in St. Charles County. Hennessey says all its workerrs are legal. The employee stopped by an O’Fallon police officer earlier this week did not have a driver’s license and told the officer he was in the country illegally.