First introduced in 2013, and rolled out in phases across England, Universal Credit (UC) now supports nearly one-in-five working age people. With welfare spending reform once again high on the policy agenda, what lessons can be learned from the rollout of UC? Here, Dr Silas Amo-Agyei, Dr Luke Munford, and Professor Matt Sutton present new research on the impact of UC on mental health and NHS services, and how these findings can inform the current debates.

• The staggered rollout of UC between 2013 and 2018 is associated with worsening population mental health and higher mental health-related healthcare use.
• By 2018, this equated to around 113,000 additional cases of depression, 30,000 extra mental health-related hospital admissions and attendances, and 1.29 million more antidepressant prescriptions each year, with combined annual costs of £2.84 billion.
• Proposed reforms to welfare spending must consider the wider health impact, with provisions to mitigate and avoid replicating the effects of UC.

Universal Credit (UC) was introduced to simplify the benefits system and strengthen work incentives. It replaced six means-tested benefits with a single monthly payment, alongside a digital-first application process, a minimum five-week wait for the first payment, and a unified system of work-search requirements. It now supports over 7.5 million people, more than 18% of the UK’s working-age population.

Yet welfare design is not only about employment and public spending. It also shapes health. The level, timing and conditions of financial support influence income security, stress, and people’s ability to manage work and daily life. Simplification and clearer work incentives can support employment, and good work is often good for health. But where support creates instability or financial strain, it can have the opposite effect. Welfare policy therefore has direct implications for demand on NHS services.

Our research links the rollout of UC across England to worsening population mental health and rising mental health-related use of NHS services. This matters now. The Government’s Get Britain Working agenda aims to reduce economic inactivity, and reshape employment support and health-related benefits. But if welfare delivery increases stress and mental ill-health, it risks weakening progress on employment while adding avoidable pressure to the NHS.

How did UC rollout affect mental health?

The staggered rollout of UC across England from 2013 to 2018 meant different areas were exposed at different times. This allowed us to compare outcomes before and after UC was introduced in each area.

Using national small-area administrative data, we tracked three outcomes: clinical diagnoses of depression, antidepressant prescribing, and mental health-related hospital admissions and attendances. Because the data cover entire neighbourhoods, the results capture population-wide impacts, including both direct effects on UC recipients and wider spillovers within households and communities.

We found that earlier exposure to UC was associated with worse mental health outcomes. At a national scale, by 2018, this translated to approximately:

• 113,742 additional depression cases per year.
• 29,993 additional mental health-related hospital admissions and attendances per year.
• 29 million additional antidepressant prescriptions per year.

Overall, the combined effects on healthcare and quality of life amounted to £2.84 billion in costs each year. These are not small side effects. They represent substantial downstream pressure on the NHS and significant costs borne by individuals, families and communities.

Why did this happen?

The patterns we observe are consistent with a simple pathway: financial strain and uncertainty increase the risk of mental ill-health, which in turn increases healthcare use and can make it harder to sustain employment.

Several design features of UC may contribute to this dynamic.

First, the start of a claim can be financially destabilising. A minimum five-week wait for the first payments, combined with deductions to repay advances can create sustained cash-flow pressures.

Second, administrative demands can create barriers. The digital-first claims process and complex evidence requirements may lead to delays, confusion and anxiety, particularly for people with limited digital access or literacy.

Third, UC formalised and intensified conditionality. With some exceptions under the Work Capability Assessment, claimants are expected to meet agreed work-search or work-preparation commitments, often for up to 35 hours per week, with the risk of sanctions if requirements are not met. While designed to encourage labour market participation, these expectations may be particularly difficult for people with fluctuating health conditions or emerging mental health problems who are not adequately supported.

These pressures may create a feedback loop. Policies intended to strengthen work incentives may, for some groups, increase stress and worsen mental health, making it harder to find and keep work.

This matters because mental ill-health carries large personal, social and economic costs. Long-term sickness is now a major driver of economic inactivity in the UK. If welfare design contributes to worsening mental health, it could widen existing health inequalities and work against wider policy goals on sustained employment and reduced pressure on NHS services.

Proposed reforms to health-related benefits further underscore the stakes. Recent modelling suggests that tightening eligibility for Personal Independence Payments could concentrate financial losses in more deprived constituencies and in areas with lower life expectancy. If reforms reduce support in places with the greatest health needs, there is a risk of widening inequalities and increasing demand on NHS services.

Policy implications: putting health at the centre of welfare reform

The Government’s reform agenda recognises the need to connect employment support with health support. Our findings highlight several considerations for policymakers as welfare reforms continue to evolve:

1. Reducing hardship at the start of a claim. Shortening or bridging the wait for the first payment, minimising avoidable delays, and reviewing deduction practices could reduce acute financial strain.
2. Conditionality may need to be carefully rebalanced for people at risk of poor health outcomes. Strengthening clinically informed safeguards and ensuring work-search expectations are realistic where mental health vulnerability exists may help reduce harm. The Pathways to Work model stresses flexible, tailored support for people with health conditions – adaptive conditionality is a key element of this.
3. Designing welfare systems for accessibility and dignity. Expanding supported non-digital routes and simplifying processes could reduce administrative stress for vulnerable claimants.
4. Integrating welfare and health support locally. Stronger links between welfare services and health support may help identify and assist people experiencing mental health difficulties earlier, particularly through local partnerships. This should build on the WorkWell initiative, connecting welfare services with social prescribers, counsellors, and mental healthcare providers.
5. Considering health impacts more systematically in welfare policy appraisal. Reforms are often evaluated primarily on employment and fiscal outcomes, but they can also have significant implications for population health and NHS use.

As Parliament considers reforms to health-related benefits and employment support, it is important that these wider system effects are considered. If financial losses are concentrated in more deprived, less healthy places, there is a real risk of increasing health inequalities and demand on already stretched NHS services.

A broader lesson

UC will remain central to the UK social security system and to any strategy to “Get Britain Working”. But welfare reform can carry a hidden health and healthcare bill.

If delivery choices increase stress and mental ill-health, the NHS will feel the consequences, and employment goals may become harder to achieve. Welfare policy is therefore labour market policy and public health policy at the same time, and recognising this connection is essential if we are to build a system that supports economic participation while protecting population wellbeing. The WorkWell initiative is a positive start, linking employment support with physical and mental health services for those living with illness or disabilities – but the same support must be made available for all welfare claimants. Work is widely recognised as a social determinant of health. Now policymakers must give the same recognition to the pathways to work.