The invisible care economy isn't natural. It was drawn up on paper in 1942.

Every so often the country rediscovers that unpaid care is holding it up, and reports it as though it were weather — a natural fact, always there, no one's decision. It is not. The particular shape of it — care as women's unpaid work, sitting just outside the wage economy and the safety net alike — has a birthdate, and the document is famous.

In November 1942, in the middle of the war, William Beveridge published Social Insurance and Allied Services (Cmd. 6404) — the report that built the British welfare state, the assault on his five giants of Want, Disease, Ignorance, Squalor and Idleness. It is rightly remembered as one of the great acts of imagination in British public life. It is less often remembered how it treated care. Beveridge designed his system, as the IFS puts it plainly, for "a country in which, for the most part, men worked and married women didn't." The married woman was a distinct insurance class, her security running through her husband. Her domestic and caring labour was assumed, unpaid, and left outside the scheme of contributions and benefits that covered wage work.

Here the popular version needs correcting, because the record is stranger than the cartoon. Beveridge did not overlook this work — he named it, and named it essential, writing that housewives had "vital work to do" in the life of the nation (his phrasing, 1942, and the surrounding language about "the British race" has aged as badly as you'd fear). He even rejected a proposed universal allowance for housewives. And he was not a lone reactionary: much of the organised women's movement of the day argued in the same "equal but different" register. The point isn't that one man was blind. It's that a whole settlement agreed to call care vital and insure it as nothing — the same move the £162 billion "second NHS" headline reruns today.

And the assumption was obsolete almost before the ink dried. By 1943, more than 40% of married women were already in paid work; the share of working-age women in employment has risen from around 40% in 1949 to about two-thirds now (IFS). Where the analogy holds is uncomfortable: we still treat unpaid care as a natural resource rather than insured labour. Where it breaks is instructive. Beveridge's anxiety was a shrinking population — hence the pressure on women to be mothers. Ours is an ageing one, which is why the caring falls on the 45-to-64s looking after parents as much as on mothers with children. The 1942 model isn't just dated. Its founding premise has inverted — and the unpaid-care assumption outlived the world that once explained it.

There's a last rhyme worth sitting with. Beveridge's settlement gave Britain the NHS — the thing we insured, funded, made a point of pride. Unpaid care is now described as a second NHS, precisely because it is the piece he left uninsured. That is not fate, and it is not weather. It was a design choice, made by named people, at a known moment. Which is the one genuinely hopeful thing the long view offers here: things with a birthdate can be redrawn.