Say a soldering technician burns her hand while repairing a printed circuit board that been rejected by a quality control inspector. This injure would be classified as AOE. New suppose the same technician brings a damaged printed circuit board from her home stereo to work and burns her hand while trying to repair. This injure would not be covered because the accident did not arise from her employment. Determining whether an injury should be classified as AOE or COE is often a point of contention in workers’ compensation litigation.