Paul Ryan, the former Speaker of the United States House of Representatives, had a phrase for what a generous welfare state does to the people who depend on it. It becomes, he said, a hammock. The image is precise: something you lie down in, something that holds you, something you might never get up from. The hammock is comfortable. That is the problem. Comfort, in this worldview, is the enemy of effort. The way to get people off the hammock is to make it less comfortable — to make the alternative of not working feel worse than the alternative of working. This is the theory. It is also the dominant organising principle of British social policy for the better part of forty years.
Britain’s unemployment benefit, measured as a proportion of previous earnings, is among the lowest in the developed world. The OECD tracks a figure called the net replacement rate — what an unemployed person receives relative to their previous take-home pay. Across OECD members, the average sits at roughly sixty percent in the first year of unemployment. Britain’s figure is around fifteen percent. [figure to verify against current OECD data] The gap is not a rounding error. It is a policy. It is the hammock argument made arithmetic: make the fall from employment steep enough and people will be too frightened to stop working, or too desperate to stay stopped for long.
The problem with the hammock argument is that it is based on a model of human cognition that is simply wrong. It assumes that the unemployed person is a rational actor, weighing costs and benefits in a calm, deliberative state, and that increasing the discomfort of unemployment will tilt the calculation toward work. Robert Sapolsky, in Why Zebras Don’t Get Ulcers, describes what actually happens to the brain under chronic stress. The zebra on the savannah has a stress response that evolved for acute threats — the lion, the flash of danger, the sprint for survival. The hormones flood in, the body mobilises, the threat passes or it doesn’t. The response is designed for minutes, not months.
Poverty is not a lion. It is a condition that does not pass. The rent is due again. The account is empty again. The letter from the council is another threat that cannot be outrun. The stress response that evolved to deal with immediate physical danger runs continuously, on low heat, day after day, and what it does to the brain over time is not mobilisation. It is damage. The hippocampus — central to memory and learning — shrinks under chronic stress. The prefrontal cortex — the part responsible for planning, impulse control, and rational decision-making — goes offline. Executive function degrades. The capacity to make the long-term calculations that the hammock argument requires — if I retrain, if I apply, if I hold out for the right job — is precisely what chronic stress destroys.
Sapolsky is direct about what this means for policy. “If you want to see an example of chronic stress,” he says, “study poverty.” The doom loop runs like this: poverty creates chronic stress; chronic stress impairs the cognitive function needed to escape poverty; impaired cognitive function makes poverty harder to escape; which deepens the stress; which deepens the impairment. The hammock argument assumes a person who is capable of rational calculation. The system it creates produces a person who is not.
This is not a marginal effect on a small number of people. Britain has had some of the highest levels of in-work poverty in the developed world. The working poor — people in employment whose wages do not cover their costs — are also, by Sapolsky’s model, chronically stressed. The stress of financial precarity does not switch off when you clock in. It follows you to work, sits with you at the desk, degrades the concentration and creativity and problem-solving capacity that any modern economy requires from its workers. Britain has had, for years, a productivity problem. The two facts — punitive benefits and poor productivity — are almost never discussed in the same room. They belong in the same room.
The conventional explanation for Britain’s productivity gap runs through investment: low capital expenditure, underinvestment in infrastructure, the short-termism of British business culture, the damage done by a financial sector that extracts rather than builds. All of these are real. But the human capital argument is underweighted. A workforce under chronic financial stress is a workforce with degraded cognitive function. The cheap labour that the low-replacement-rate policy produces is not, as advertised, hardworking labour. It is stressed labour. Stressed labour is less creative, less focused, less productive. The meanness that is supposed to generate effort generates, instead, the neurological conditions for failure.
Percy has been here before. The workhouse commissioners in 1834 knew they were building something more expensive than the alternative. The expense was the point — the deterrent had to be felt, the punishment had to sting, or it would not work. They were wrong about what it would produce. They got misery, not industry. The modern version of the same argument — make the safety net thin enough and people will scramble — is producing the same results by a slower mechanism. The stress does not announce itself as a policy cost. It appears instead in the GP surgery, in the school that cannot reach the distracted child, in the workplace where nobody quite delivers what they might have done if they had not spent the previous night calculating whether the direct debit would clear.
The bayonet has a worker at either end. The punitive benefit system punishes the person who falls out of work. It also — invisibly, distributed across a thousand budgets, unattributed to any single cause — punishes the economy that employs them. The bill, as always, has been sent to the wrong address. And the address it has been sent to is the productivity figures that Britain has been studying, baffled, for decades, without quite being willing to follow the argument to where it leads.