Slavery in the Roman Empire

In 319 CE, the Emperor Constantine issued a law so specific it reads like a catalogue of horrors: you could no longer poison your enslaved workers, hang them, crucify them, throw them off buildings, drown them, or beat them to death. The law was necessary because, for centuries before it, none of those acts had been illegal. This single detail captures the scale of what historian Emma Southern calls an "abnormal situation"—a society in which roughly one in three people lived without freedom, and where the system was so total that no anti-slavery movement ever emerged.

The Scale and Nature of Roman Slavery

Roman slavery was not a marginal institution but the engine of the empire itself. Southern’s epiphany came while thinking about Roman coins: every single one had been minted by enslaved hands. From there, she realized the pattern held across every sector—agriculture, mining, bureaucracy, medicine, law. At its peak, somewhere between 30 and 40 percent of the population was enslaved. This was not a system of unskilled labor alone. The Romans did something unusual: they educated enslaved people extensively and placed them in positions of immense responsibility. Doctors, lawyers, accountants, and entire bureaucratic departments were staffed by enslaved people. A person could be a highly skilled professional and still have no legal right to their own body or children.