EN
The paper includes four case studies on brewing companies operating in the Polish market. The businesses were selected on the basis of non-typical values of various economic efficiency measures (ROS, inventory turnover, total debt ratio) revealed in their ratio analyses. Usually, non-typical ratio values are indicative of turbulent changes taking place in a business. Stabilisation of the above measures most frequently signifies recovery, while their variability may signal an imminent crisis or may accompany winding up a business.