The wage rate falls under the category of labor conditions.

According to Article 134 of the Labor Code, labor conditions are understood as a set of social and production factors by which the employee's labor activity is carried out in accordance with the employment contract concluded with the employer.

• Social factors include the amount of wages, the duration of working hours, vacation, and other conditions.
• Production factors include technical, sanitary, hygienic, production-household, and other conditions.

At the same time, in accordance with Article 135 of this Code, the conditions of labor are determined by labor legislation, other legal acts on labor, as well as by agreement of the parties to the employment contract.

According to this rule, the employer cannot unilaterally change the condition related to wages.

In this case, you need to contact the district justice department.