Asceticism- Discussion

This is my personal opinion but I believe that the case of over-working workers from Japan/Korea challenges Lutheran's idea of calling. The idea of calling is that the people were each provided with a vocation by God. It also includes that people shouldn't work beyond what is required to live. Today, in our modern society, people work to gain earnings beyond what is necessary to live because people are constantly being evaluated based on material possession (like money and objects). This means that often times the over-working workers are also working to achieve more than what is required to live, which contradicts Lutheran's idea. If those workers were to follow God's calling then there would be no reason for them to over-work until karoshi. However, there also exists this irony that over-working occupations could also be God's calling.