AECOM is arbitrating an age discrimination lawsuit by George J. But it isn't the only age discrimination lawsuit leveled against prominent construction-related employers in recent years. Older staff members who departed or were shown the door at engineering firm HNTB and architecture practice Gehry Partners have also filed age discrimination lawsuits. Longtime HNTB information technology staff member Joanne Walsh was never formally terminated but nevertheless initiated an age discrimination lawsuit. Nevertheless, she sued for age discrimination in state court, claiming she was “constructively discharged” because of hostile work conditions in violation of state and federal age discrimination law.