Walk into any care home in Leeds, a hospital ward in Birmingham or a clinic in Luton and there's a good chance you'll hear Shona or Ndebele somewhere down the corridor. That's not an accident. It's what happens when one part of the world runs short of young workers and another has plenty of them. The harder question is what comes next, now that the richest countries are ageing faster than ever while also closing the door.
A world with more grandparents than children
The numbers are blunt. The United Nations' World Population Prospects 2024 projects that by the late 2070s there will be about 2.2 billion people aged 65 and over, more than the number of children under 18. One in four people already lives in a country whose population has peaked, a group of 63 countries and areas that includes China, Germany, Japan and Russia.
The UN is also clear about what has been holding some of those populations up. For countries like Italy and Germany, the report says the population peak would have come sooner without immigration, and immigration is projected to be the main driver of population growth in 52 countries and areas through 2054, including Australia, Canada and the United States.
Japan shows what the squeeze looks like in practice. Foreign workers there hit a record 2.57 million at the end of October 2025, up 11.7 percent in a year and nearly triple the roughly 900,000 of 2015, according to health ministry data reported by Japan Today. That's a country long reluctant about immigration quietly hiring from abroad because it has to.
Africa is where the workers are
Now flip the map. Sub-Saharan Africa is projected to add 625 million people to its working-age population by 2050, more than three quarters of the entire global increase, according to World Bank projections reported by Nairametrics in September. Over the same period, East Asia and the Pacific are expected to lose more than 200 million working-age people.
On paper, the match makes itself. Ageing economies need nurses, carers, builders and farm hands. Africa has young people who need jobs. But demographics don't vote, and politics has been pulling hard in the other direction.
Britain slams the brakes
The UK is the clearest example, and the one that matters most to Zimbabwean families. Main applicants for the Health and Care Worker visa fell to 7,600 in the year ending August 2026, down 65 percent in a single year and 95 percent below the peak of 161,700 in late 2023, according to Home Office statistics. The Home Office puts the fall down first to tougher scrutiny of care employers, then to policy changes: the ban on care workers bringing dependants in March 2024, and the closure of overseas recruitment for care worker roles on 22 July 2025.
That doesn't mean the need has gone away. Britain's population is still ageing and its care sector still runs on thin staffing. What has changed is who is allowed to fill the gap. People already in the UK on another visa can still switch into care work until 22 July 2028, but for many would-be carers in Harare or Bulawayo, the route that thousands of relatives and neighbours used between 2022 and 2024 has effectively shut.
The wait to settle
For Zimbabweans already working in Britain, the bigger question now is how long it takes to stay for good. Under the government's "earned settlement" proposals, the standard wait for indefinite leave to remain would double from five years to 10, and care workers would wait 15. The consultation ran from November 2025 to February 2026, and the proposals would also cover people already in the country who have not yet settled.
None of this is law yet. The government's response is due before the end of 2026. In the meantime, unions including UNISON, along with more than 70 MPs and peers who signed an open letter in February, have pressed ministers to drop the longer wait for care workers or at least protect those who arrived under the old five-year promise.
Britain isn't the only door narrowing. Since 1 January 2026, under Presidential Proclamation 10998, the United States has suspended visitor, student, exchange and immigrant visas for Zimbabwean nationals, with limited exceptions.
Zimbabwe on both sides of the ledger
Here's the uncomfortable part. Zimbabwe is not just a supplier of workers, it is a country that can't afford to lose them. It sits on the World Health Organization's health workforce support and safeguards list, which flags 55 countries whose health worker numbers are too low to reach universal health coverage. The WHO list doesn't ban recruitment outright, but the UK's code of practice treats listed countries as red, meaning no active recruitment of health workers from them.
At the same time, the money those workers send home has become a pillar of the economy. The Reserve Bank of Zimbabwe says diaspora remittances reached US$2.45 billion in 2025, up from US$2.152 billion the year before, and made up about 15.1 percent of the country's foreign currency receipts, second only to exports. The flow hasn't slowed yet: formal remittances reached US$1.62 billion in the first seven months of 2026, up 24 percent, with US$459 million of it from the UK, according to RBZ data reported by Equity Axis. NewZimbabwe's report puts the number of Zimbabweans living abroad at around 5 million, more than 1.5 million of them in South Africa.
So the same nurse is two things at once: a gap on a ward at Parirenyatwa and a lifeline for a family in Chitungwiza.
What it means for Africa
The short answer to the headline question is no, not comfortably. The UN's own figures suggest that many ageing countries will lean on immigration whether their politics likes it or not. The more interesting question is on what terms.
For Zimbabwe and its neighbours, the risk is being treated as a tap that rich countries open and close depending on the election cycle, as Britain's visa numbers show. The opportunity lies in the WHO's own suggestion: government-to-government deals that are informed by labour market analysis in both countries, where training costs are shared and some of the benefit flows back into the health system that trained the worker in the first place. Kenya is already testing that model, with government-to-government labour agreements signed with Germany and, in July 2026, Italy covering legal pathways, training and worker protection.
The World Bank's point about Africa's young workforce also cuts both ways. Those 625 million new workers are a global asset only if there are jobs for them, and most of them will be looking for work at home, not in Europe or Japan. If African governments can build the industries, clinics and schools to absorb even part of that generation, the continent negotiates from strength. If they can't, the conversation will keep being about who gets to leave.
The ageing world needs Africa. Whether Africa gets a fair deal out of that need is still being decided.
Sources
- World Population Prospects 2024: Summary of Results, United Nations DESA
- Africa will supply 75% of new global workers by 2050, World Bank projects, Nairametrics
- Japan's foreign worker population hits record 2.57 million, Japan Today
- Monthly entry clearance visa applications, August 2026, GOV.UK
- Statement of changes: care worker visas from abroad are to end, Burness Paull
- Overseas care staff face 15-year wait for settlement under government immigration plan, Community Care
- Revised earned settlement policy to be unveiled before the end of 2026, Lewis Silkin
- Hundreds of migrant care workers take Fair Visa Campaign to Westminster, UNISON
- Over 70 parliamentarians join our call to axe retrospective settlement plans, Work Rights Centre
- Proclamation 10998, travel ban effective January 1, 2026, NAFSA
- WHO health workforce support and safeguards list 2023, World Health Organization
- Diaspora remittances contributed US$2.45 billion to economy in 2025: RBZ, NewZimbabwe.com
- Zimbabwe's US$1.62 billion remittance economy moves into top FX tier, Equity Axis
- Kenya, Italy sign migration pact to expand jobs, promote safe labour mobility, The Star
