Values define the directions of human activities and are related to people’s motivation to undertake specific activities and roles (Schwartz, 1994; Brown, 2002). Researchers and employers observe differences in motivation to work among representatives of different generations and genders (Twenge, Campbell, & Freeman, 2012; Gursoy & Karadag, 2013). In this research project, the authors asked what motivated contemporary employees, whether the intensity of their motives was different in different generations, what relationships there were between the dominant work motives and employees’ dominant values, and whether there were differences between women and men regarding work motives. To verify the hypotheses, they conducted a study with a sample of 307 professionally active people. They used their own Types of Work Motives Questionnaire designed for the purposes of the study and the Valued Living Questionnaire (VLQ; Wilson & Murrell, 2004). The obtained results indicate that younger employees choose the kind of work that gives them comfort and adequate pay. Regardless of age, however, social security support is the most important for all groups of respondents. For women, security and social security support are important at work. Moreover, the study has shown that there is a relationship between work values and work motives. For example people who appreciate values such as friendship and stability are motivated to work by good relationships and security, those who value recreation and stability are motivated by comfort and salary, those for whom respect and education are crucial are motivated by the possibility of development etc.

The mining of hard coal deposits at increasingly greater depth leads to an increase in hazards related to the loss of stability of steel arch supports as a result of excessive static and dynamic loads. Camber beam reinforcement via rockbolting is often utilised in order to improve the stability of the yielding steel arch support.

This article presents the results of comparative bench tests of the ŁP10/V36-type steel arch support, tested with and without reinforcement by means of self-drilling bolts with drunken R25 threads, using short joists formed from V32 and V25 sections. It also presents the results of comparative tests of the ŁPP10/4/V29/I-type steel arch support, tested with and without reinforcement by means of rock bolts with trapezoidal Tr22/13 threads, using short joists formed from V25 sections. The obtained test results, in the form of load courses and work values of the steel arch and mixed (arches and rock bolts) support systems, demonstrate that the utilisation of mixed support may significantly improve the stability of workings, particularly immediately after they are driven. A mixed support system quickly achieves its maximum load capacity together with a significant increase in its work value. It may thus prevent the stratification of the rocks surrounding the working, and therefore better utilise the self-supporting capacity of the rock mass. As evidenced by the test results, the mixed support work may be as much as 3.5 times as great compared to the steel arch support at the beginning of the height reduction process initiated by loading – i.e. until its reduction by a presupposed value of 100 mm.