Jan 25, 1979 — The First Recorded Death Involving a Robot
January 25, 1979
On January 25, 1979, Robert Williams, a worker at a Ford Motor Company plant in Michigan, was tragically killed in an accident involving an industrial robot.
According to what is known, a robotic arm responsible for retrieving parts from tall storage racks had begun malfunctioning, reportedly due to sensor issues. Robert Williams decided to climb the rack himself, working in close proximity to the robot to retrieve the needed part.
At that moment, the one-ton machine—equipped with no sensors capable of detecting human presence—continued executing its program and, tragically, inflicted fatal injuries on Williams.
The lawsuit
Williams’ family filed a lawsuit against Litton Industries, the company that designed and installed the robotic system.
Their lawyers argued that, given its size and power, the robot posed a deadly risk to humans and should have been equipped with warning systems and human-detection sensors.
After ten days of hearings, a Detroit jury ruled in favor of the Williams family. They were awarded $10 million in damages.
This decision became extremely important for the development of industrial robotics, as it pushed both robot manufacturers and factories to take worker safety much more seriously.
“Humans and robots must not share the same workspace”
Factories began adopting new approaches to protecting workers. A rule emerged: humans and robots should not operate in the same space.
Working robots started to be enclosed behind physical barriers or light curtains — laser sensors that would immediately cut power if a person was detected.
ANSI and ISO safety standards began to take shape, mandating audible alarms for moving robots, emergency stop buttons, and many other safeguards. The familiar “beep-beep” sound we now associate with large industrial robots is a direct result of these requirements.
Did these rules actually improve safety?
After the deaths of Robert Williams in the United States and Kenji Urada in Japan two years later, the new rules did not immediately eliminate fatalities. Throughout the 1980s, deadly incidents were still recorded, despite there being only a few thousand robots operating nationwide.
Today, tens of millions of industrial robots are in use across the United States. Unfortunately, about one fatal accident per year is still recorded involving robots in industrial settings.
It is important to note that the vast majority of these incidents are linked to improper operation or violations of established safety procedures.
Experts widely agree that without the Williams case, the court ruling, and the changes that followed, many more lives would have been lost.
Cobots
Over the past 20 years, collaborative robots—cobots—have become widely used in industry. These machines are designed from the ground up to work safely alongside humans in shared spaces.
Cobots are smaller, feature safer geometry (no sharp edges or gaps), operate with lower power and slower speeds so that people can react to their movements, and are equipped with numerous sensors and programming safeguards to prevent harm to nearby workers.