The article addresses the problem of gainful employment undertaken during full-time studies. It analyzes the importance of students' motivations to work and the selected effects of combining studies and work. It refers to areas that have not yet been investigated by other researchers. The data used in the article come from the survey conducted by the author at the Faculty of Economics, at the University of Economics in Katowice through 2014-2017. The study revealed a strong relationship between the motivations to start work during studies and the following factors: the alignment of a chosen job to the field of study, the opportunity to develop new skills and competencies valued on the labor market, the willingness to continue working for the same employer after graduation, and an employer's intention to employ a student after graduation. Another connection was identified between the character of the work performed by students and their readiness to change if given another opportunity. The relationship, albeit relatively weak, was also confirmed between the character of the work performed and difficulties experienced by students with combining work with studies and the ability to maintain a balance between time assigned to studying, work and leisure.