Protestant work ethic
The Protestant work ethic , the Calvinist work ethic , or the Puritan work ethic is a work ethic concept in theology , sociology , economics and history which emphasizes that hard work , discipline , and frugality are a result of a person's subscription to the values espoused by the Protestant faith , particularly Calvinism . 
<triplet> Protestant work ethic <subj> work ethic <obj> instance of <triplet> Calvinism <subj> Protestant faith <obj> subclass of