Cost control is a constant struggle for oil, gas, and energy companies. Poor shift scheduling of engineers, field service workers or laboratory employees can lead to increased costs, decreased profitability, high worker turnover, and soaring grievances. Field services, laboratory and engineer managers often spend countless hours on shift scheduling, trying to get their shifts and work schedules just right. Overstaffing wastes payroll dollars while understaffing results in blown budgets. Energy shift scheduling presents many challenges. Most oil and gas exploration companies or alternative fuel research laboratories operate around the clock (24/7), having many job positions to schedule and multiple shifts to cover. Within each shift, staff must also be assigned to various tasks. Further, union and FLSA rules may place restrictions on work hours, overtime compensation, and the types of shift rotation that can be implemented. The schedulers must also consider time-off requests, labor rules, and worker availabilities when developing schedules for energy companies.