The duty depends on the relationship between the parties and the circumstances.

Drivers owe duties to others using the road. Businesses may owe duties to customers. Property owners may have responsibilities toward lawful visitors. Healthcare providers must comply with professional standards. Employers may have duties related to hiring, supervision, training, and workplace safety.

More than one duty may apply to an incident. An attorney can investigate who controlled the risk and who had the opportunity or responsibility to prevent the harm.