The thesis discusses the informatization and automation of office operations. Additionally, the paper explains all phases from the very beginnings of office operations to the office operations as we know them today. Through the paper, we will encounter both positive and negative aspects of office operations throughout history. The paper also reflects on the positive and negative aspects of today's way of doing business. Systems that facilitate citizens' access to public institutions are listed. Systems such as e-Citizens, e-Tax, and e-services of the Ministry of the Interior are mentioned. What is also important for the modern era of office operations are the new types of offices, namely D-office, V-office, and M-office. Through the paper, we will see how important they are for advancement and for the greater digitalization of public administration. The Republic of Croatia is a modern state striving for progress, and for this reason, the National Plan for the Development of Public Administration for the period 2022 to 2027 has been adopted. Also, what is important because it provides guidelines in which public administration plans to further develop and continue with informatization and automation is the Digital Croatia Strategy for the period until 2032. All the above is important for public administration but also for officials who perform the tasks. Work today is greatly facilitated in terms of simplified programs and processes, but new challenges lie ahead that relate to adapting to new ways of working and digitalization.