The Office of the Director connects and directs professional and business activities in the Institute.

The central department of the Institute is the Department of Lexicography where fundamental scientific and professional activities are carried out. The staff members are predominately lexicographers.

The Graphics-IT Department is a structural whole of the Institute which performs the services of IT support to the professional and business system of the Institute, as well as informatical and graphic preparation and presentation of lexicographical works on-line, in books or in a digital format.

The Department of Human Resources and Legal Affairs carries out legal, personnel, administrative and technical affairs.

The Department of Finance and Sales carries out financial and accounting services, as well as sales and promotion of editions of the Institute and other related editions.