In this paper, I am classifying empirical research work from 1974 to 1994 dealing with the relationship between work ethic and religious background. The classification is based on threee categories. In the first category,  I am presenting empirical results which support that there is a significant and positive relationship between religious background and work-oriented behaviours, and hence Weberian Protestant ethic is still alive. In the second category, I am showing the opposite results of the first category. Finally,in the third category, I am introducing some results which are closely related to the topic.