Max Weber argued that Calvinist guilt about salvation created modern capitalism.
The concept of the "work ethic" as a cultural force enters intellectual history through Max Weber's 1905 essay Die protestantische Ethik und der Geist des Kapitalismus (The Protestant Ethic and the Spirit of Capitalism).1 Weber argued that Calvinist theology, particularly the doctrine of predestination, created an anxious need among believers to search for evidence that they were among God's elect. Disciplined, relentless labor and the accumulation of wealth became outward signs of inner grace.
Weber did not invent the phrase "work ethic." He described a specific Protestant, and particularly Calvinist, attitude toward labor that he believed had become secularized by the time of Benjamin Franklin, whose aphorisms ("time is money," "industry and frugality") Weber quoted as evidence that the religious motivation had faded while the behavioral pattern remained.2
Weber's argument was contested from the start. Economic historian R.H. Tawney, in Religion and the Rise of Capitalism (1926), reversed the causality, arguing that capitalism shaped religious attitudes rather than the other way around.3 Historians have since pointed out that commercial capitalism flourished in Catholic Florence, Buddhist Japan, and Confucian China without Calvinist theology.4
The phrase "work ethic" entered everyday English in the mid-twentieth century, detached from Weber's Protestant specificity. It now describes any individual's dedication to disciplined labor, regardless of religious background. The moral loading persists. A "strong work ethic" remains one of the most common phrases in job recommendations, performance reviews, and hiring criteria, applied universally to a trait Weber traced to a specific theological anxiety.5