Shift work guides to any work schedule outside the traditional office timings of 9 to 5. Shift work can include evening, night, and early morning shifts and fixed or rotating schedules. A shift pattern is a formal set of rules that define which employees are required to work at various times and on different days. In contrast, to shift work, day workers are those people who regularly work the same hours on the same days each week. Shift work can provide many benefits for both employers and employees, including allowing employees with irregular schedules to work full-time, maximizing efficiency by ensuring that the same people do not always fill the same roles, and creating more time for productivity because shifts may be staggered. Employers who offer shift work are often more attractive to prospective employees seeking flexible work opportunities.