Roman Chumak, attorney-at-law, managing partner of Ares Law Firm and chairman of the Interregional Expert Center “Pro Justice” public organization, comments. The possibility of reserving employees of enterprises for the period of mobilization is provided for by the Resolution of the Cabinet of Ministers of Ukraine “Some Issues of Implementation of the Provisions of the Law of Ukraine “On Mobilization Preparation and Mobilization” on Reservation of Persons Liable for Military Service for the Period of Mobilization and for Wartime” No. 76 dated January 27, 2023. According to the Law of Ukraine “On Mobilization Preparation and Mobilization,” reservations entitle you to a postponement of military service during mobilization. What is the most common reason for booking employees? What criteria are set for obtaining this status of a critical enterprise for the national economy sectors and how many must be met? What is the procedure for obtaining this status? Are there any peculiarities in the booking procedure that I should pay attention to?