Poor working conditions or unsafe materials create an unsafe work environment and can cause bodily or fatal injuries. Employers are under the obligation to take all precautions necessary to prevent occupational diseases. If they cannot demonstrate that they have taken such precautions, they have not complied with their duty of care and are liable for the resulting loss and damage. The duty of care also applies towards subordinates working without employment contracts. Work-related accidents can cause immediately noticeable or visible injuries, but occasionally such injuries do not become apparent until later. Examples are the consequences of exposure to asbestos or RSI from using computers or other repetitive actions. We call this occupational diseases with insidious damage.