While fatigue is not exclusive to law enforcement, it is particularly significant due to the nature of the job. Officers respond to calls for service and emergencies, patrol the community, handle complaints, and interact with the public and other officers daily. Departments often use shiftwork to meet this need. Officers may also need to work overtime, go to court during their off-duty hours, or even pursue secondary employment, which can inevitably disrupt sleep schedules and lead to fatigue. High levels of fatigue can cause several negative effects, including acute and chronic health problems; impaired alertness; and decreased cognitive processes, problem-solving skills, concentration, and reasoning. The impact the lack of sleep has on the body can also affect an officer’s job performance. If the quality of public service and community-police encounters decreases, this can lead to an increased amount of public complaints.