It is illegal for shopping malls to impose fines on employees. Fines are administrative punishment measures stipulated in China's administrative punishment law, which can only be implemented by administrative organs with administrative punishment power. The Administrative Punishment Law stipulates that an administrative organ may, in accordance with the provisions of laws, regulations and rules, entrust an organization that meets the prescribed conditions to implement administrative punishment in writing within its statutory authority. The administrative organ shall not entrust other organizations or individuals to implement administrative punishment. Legal basis: Article 20 of the Administrative Punishment Law of the People's Republic of China In accordance with the provisions of laws, regulations and rules, the administrative organ may, within its statutory authority, entrust an organization that meets the conditions stipulated in Article 21 of this Law in writing to implement administrative punishment. The administrative organ shall not entrust other organizations or individuals to implement administrative punishment. The power of attorney shall specify the specific matters, authority, time limit and other contents entrusted. The entrusting administrative organ and the entrusted organization shall publish the power of attorney to the society. The entrusting administrative organ shall be responsible for supervising the behavior of the entrusted organization to implement administrative punishment, and shall bear legal responsibility for the consequences of this behavior. The entrusted organization implements administrative punishment in the name of the entrusted administrative organ within the scope of entrustment; No other organization or individual may be entrusted to implement administrative punishment.