Labor law refers to the body of laws, regulations, and policies that govern the relationship between employers and employees. It covers a wide range of topics, including employment contracts, wages and working hours, health and safety, discrimination, and collective bargaining. The main purpose of labor laws is to protect the rights and interests of workers and to promote fair and safe working conditions.

Labor laws can be divided into two main categories: public labor laws and private labor laws. Public labor laws are enacted by governments and apply to all employers and employees within a jurisdiction. Examples of public labor laws include minimum wage laws, worker's compensation laws, and laws that prohibit discrimination and harassment in the workplace.

Private labor laws, on the other hand, are agreements between employers and employees or their representatives, such as unions. These agreements are usually in the form of collective bargaining agreements (CBAs) and they establish the terms and conditions of employment, such as wages, benefits, and working conditions.

Labor laws can vary by country, state, and even by sector, so it's important for employers to be familiar with the specific laws that apply to their business and workforce. It's also important for employees to be aware of their rights and responsibilities under the law, and to have access to legal representation if needed.