Employing each of the thirteen factors can be justified by theories presented in the first part of this paper. If we analyze chosen factors in the light of Maslow’s hierarchy of needs “interesting work” might be understand as self-actualizing need, “good wages” as physiological factor, “full a ppreciation of work done” as an esteem need, “job security” as safety factor. Particular factors can be explained also by other theories. For example, “full appreciation of work done” can be supported by Adam’s equity theory. Worker might feel de-motivation if