The very first wage was not a coin in a hand, but a measurement of time itself, a concept so abstract it required humanity to invent the clock to make it real. Before the invention of the hourglass and the mechanical clock, labor was measured by the sun or the completion of a task, but the wage system demanded a new way to value human effort. Moses I. Finley described this as the difficult conceptual step of separating a man's labor from his person and the product he created. When a craftsman sold a pot, the buyer purchased the object, not the time spent making it. However, when an employer hired a worker, they purchased the abstraction of labor-power, a commodity that could be consumed and measured in units of time. This shift turned the human body into a machine of hours, where the value of existence was calculated by the ticking of a clock. The earliest standard unit of this exchange was the day of work, but the invention of timekeeping devices allowed for the subdivision of the day into hours, creating the hourly wage that remains the foundation of modern employment.
Ships and Shekels of Babylon
In the ancient world, the concept of a wage was already codified into law, with the Code of Hammurabi establishing specific rates for maritime labor over three thousand years ago. Circa 1755 to 1750 BC, Law 234 of the Code stipulated that a shipbuilder constructing a 60-gur vessel was entitled to a prevailing wage of 2 shekels. This was not a vague promise of payment but a rigid legal standard enforced by the state. The same legal code dictated that a ferry operator charging a charterparty between a ship charterer and a shipmaster must charge a rate of 3-gerah per day, while Law 276 set a freight rate of 2-gerah per day for contracts of affreightment. Even Law 277 established a specific daily freight rate of 1-shekel for a 60-gur vessel. These regulations emerged from the unification of city-states in Assyria and Sumer by Sargon of Akkad, who ruled circa 2334 BC, and were further standardized by his grandson Naram-Sin between 2254 and 2218 BC. The existence of these laws proves that the exchange of money for labor was a sophisticated economic reality in ancient Mesopotamia, long before the modern era of capitalism.The Gender and Race Gap
Even in modern economies where market forces dictate pay, the historical legacy of inequality persists in the numbers recorded by the U.S. Bureau of Labor Statistics. In 2007, women of all races earned approximately 80% of the median wage of their male counterparts, a disparity attributed to the supply and demand for women in the market due to family obligations. The gap widened when race was factored into the equation, with white men earning about 84% of the wage of Asian men, and black men earning only 64% of the wage of their Asian counterparts. These statistics represent overall averages and do not account for the type, amount, or quality of work performed, yet they reveal a persistent structural bias. The wage system, while theoretically neutral, has historically been shaped by social hierarchies that assign different values to labor based on the identity of the worker. This disparity remains a central issue in labor economics, challenging the notion that free markets naturally correct for discrimination.