Work-life balance -Poland in comparison with selected European countries …………………………………………………….. 37. Henryk WOJTASZEK -Hydrogen energy as a catalyst for sustainable development: a comparative analysis of policies, strategies, and implementation in Poland and Germany ……………………………………………………………….. 38. Radosław WOLNIAK, Wies GREBSKI -The applications of usage of business analytics in Industry 4.0 ………………………………………………………………. 39. Radosław WOLNIAK, Wies GREBSKI -The usage of smartphone applications in smart city developmenturban mobility and traffic management ………………... 40. Radosław WOLNIAK, Wies GREBSKI -The usage of business analytics in Industry 4.0advantages and problems …………………………………………… 41. Dagmara ZUZEK, Lidia LUTY, Monika ZIOŁO -The organic food market in selected EU countries 2012-2021 ………………………………………………….. 42. Agnieszka ŻOŁĄDKIEWICZ-KUZIOŁA -The impact of the use of revenue and expenditure instruments by the municipality on the development of entrepreneurship ……………………………………………………………………