## 3 Results
### The Identification of a Set of Significant Causes That Lead to Accidents on Building Scaffoldings  
In the analyzed set of accidents \(A_{V}\), technical causes \(T\) occurred 336 times in total. Table 1 lists the identified technical causes \(T\), which are arranged in descending order, starting with the cause that occurred the greatest number of times. Table 2 contains the cardinality of occurrences of individual \(t_{\gamma}\) causes, the percentage share of individual \(t_{\gamma}\) causes, the cumulative percentage share of \(t_{\gamma}\) causes and the validity class of \(t_{\gamma}\) causes. Figure 2 presents a Pareto-Lorenz diagram that shows the \(t_{\gamma}\) causes, which are ordered from the maximum number of occurrences to the minimum number of occurrences, and also their cumulative percentage share. The figure also shows the validity class of causes: A--very significant; B--significant; C--insignificant. When analyzing the obtained results, it should be stated that technical causes \(t_{1},\ t_{2},\ t_{3}\) and \(t_{4}\), the cumulative share of which is approximately 83%, are very significant. \begin{table}
\begin{tabular}{c c c c c c} \hline \hline  & **Type of Organizational Causes \(O\)** & **Cardinality of Occurrence** & **Share [\%]** & **Cumulative Share [\%]** & **Validity Class** \\ \hline \(o_{1}\) & Lack of supervision & 110 & 18\% & 18\% & A \\ \hline \(o_{2}\) & Admission of scaffoldings to operation without the required inspection and supervision & 83 & 13\% & 31\% & A \\ \hline \(o_{3}\) & Lack of or inadequate training in the area of occupational health and safety & 72 & 12\% & 43\% & A \\ \hline \(o_{4}\) & Acceptance of deviations from the rules and regulations of occupational health and safety & 64 & 10\% & 53\% & A \\ \hline \(o_{5}\) & Inadequate professional training of an employee & 55 & 9\% & 62\% & A \\ \hline \(o_{6}\) & Lack of instructions on how to use scaffolds safely & 48 & 8\% & 69\% & A \\ \hline \(o_{7}\) & Admission of an employee to work without medical examination or with medical contraindications & 46 & 7\% & 77\% & A \\ \hline \(o_{8}\) & Inadequate passages and access points & 43 & 7\% & 84\% & B \\ \hline \(o_{9}\) & Lack of personal protective equipment & 25 & 4\% & 88\% & B \\ \hline \(o_{10}\) & Acceptance of the use of improper technology by supervisors & 15 & 2\% & 90\% & B \\ \hline \(o_{11}\) & Incorrect job sharing or task scheduling & 14 & 2\% & 92\% & B \\ \hline \(o_{12}\) & Improper placement and storage of work tools & 11 & 2\% & 94\% & B \\ \hline \(o_{13}\) & Incorrect location of equipment at a workstation & 7 & 1\% & 95\% & B \\ \hline \(o_{14}\) & Improper selection of personal protective equipment & 7 & 1\% & 96\% & C \\ \hline \(o_{15}\) & Incorrect coordination of collective work & 6 & 1\% & 97\% & C \\ \hline \(o_{16}\) & Incorrect commands of superiors & 5 & 1\% & 98\% & C \\ \hline \(o_{17}\) & Not removing unnecessary tools, substances or energy, e.g., waste & 5 & 1\% & 99\% & C \\ \hline \(o_{18}\) & Performing work when short-staffied & 3 & 0\% & 100\% & C \\ \hline \(o_{19}\) & Performing work on command that is not included in the scope of an employee’s duties & 2 & 0\% & 100\% & C \\ \hline \(o_{20}\) & Performing work despite having the wrong tools and materials & 1 & 0\% & 100\% & C \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Analyzed detailed organizational causes \(o_{\delta}\). In the analyzed set of accidents \(A_{V}\), organizational causes \(O\) occurred 622 times in total. Table 3 lists the identified organizational causes \(O\), ordered from the maximum to the minimum, starting with the cause that occurred most often. Additionally, this table includes the cardinality of occurrences of individual \(o_{\delta}\) causes, the percentage share of individual \(o_{\delta}\) causes, the cumulative percentage share of \(o_{\delta}\) causes and the validity class of \(o_{\delta}\) causes.