Does the security work of the property company 12 hours violate the labor law?

Illegal.

Lawyer's analysis

Security work 12 hours is illegal.

According to the law, if the employer arranges the laborer to work twelve hours a day and the employer illegally extends the working hours of the laborer, the employer's behavior is illegal, and the laborer can complain to the labor administrative department.

The state practices a working-hour system in which workers work no more than 8 hours a day and 44 hours a week on average.

legal ground

Article 37 of People's Republic of China (PRC) Labor Law

The employing unit shall treat workers who carry out piecework in accordance with the provisions of Article 36 of this Law.

Specify the working hour system and reasonably determine its labor quota and piece-rate remuneration standard.