Best-selling authors Robert Levering and Milton Moskowitz compiled the list, screening more than 1,000 companies, then inviting 295 to participate in the evaluation process. Companies were rated on a 175-point scale. Employees are surveyed on work environment, trust in management, pride in work, and camaraderie. Each company also completes a 31-page inventory of human resource polices and practices, such as hiring, promotion, compensation, and recognition. Granite Rock was 33rd.
Granite Rock is among the smallest firms to make the list.