The current issue of the South East European Journal of Economics and Business publishes twelve contributions from diverse economic and business empirical studies. In the first paper, Budak and Erdal (2022) investigates the mediating effect of burnout syndrome on toxic leadership and job satisfaction in businesses using primary data from Turkey. The results confirm that toxic leadership has negative consequences for burnout syndrome and job satisfaction, advocating importance of the type of leadership for employees performance. The second contribution by Almasri (2022) investigates emergence of mobile applications that are used to support the healthcare services linked to the Corona pandemic. The author collects primary data in Aman and finds numerous systematic influences of different perceptions and expectations on the use of such applications. The third research is by Markić et al. (2022) who examine the impact of knowledge management on the organizational performance of companies in Bosnia and Herzegovina. The paper finds that the size of companies affects systematically knowledge management, which is reported to have a positive impact on various indicators measuring performance of companies.The following few studies are more economically oriented, including the first contribution by Frey et al. (2022) who investigate perception of corruption, but in two different contexts, corruption in businessto-business and business-to-government interactions, relying on primary evidence from Serbia. The analysis shows that small and medium enterprises are specifically affected by negative corrupt environment, while large companies are seen often as the