Work, Wages & Labour: The Gender Pay Gap
The Pay Gap Isn't Where Most People Think It Is
The gender pay gap is real, persistent, and almost entirely explained by something that has nothing to do with discrimination happening in the moment of hiring.
The Idea
When people argue about the gender pay gap, they often talk past each other — because there are actually two different gaps, and they behave very differently. The raw gap, which compares all men's earnings to all women's earnings, sits at roughly 15–20% in most wealthy countries. Critics are quick to point out that this shrinks dramatically once you control for occupation, hours worked, and industry. They're right. But here's the thing: that adjustment doesn't dissolve the problem — it relocates it. The more revealing figure is what economists call the 'residual' or 'unexplained' gap: the portion that persists even after controlling for those factors. That residual is real, but it's also smaller than the headline number — typically 5–8%. So where does the rest go? Into the controls themselves. Women are more likely to work in lower-paying sectors, more likely to work part-time, more likely to take career breaks. The question worth asking isn't whether those choices are free — it's why those patterns exist at all, and why they cost so much. Harvard economist Claudia Goldin, who won the Nobel Prize in Economics in 2023, has spent decades on exactly this. Her answer: the gap is driven less by who you are and more by how your job is structured. Specifically, by how much your employer pays for availability — the premium placed on being reachable, flexible, always-on.
In the World
Goldin's most striking finding comes from comparing two nearly identical professions: pharmacy and medicine. Both require advanced degrees, both are high-status, both pay well. But the pay gap between male and female pharmacists is tiny — one of the smallest of any profession. Between male and female doctors, it's substantial. Why? The structure of the work. Pharmacy was transformed over the past few decades by the rise of pharmacy chains and electronic records. A pharmacist's work became genuinely substitutable — a colleague can pick up where you left off without the patient losing anything. Doctors, especially in specialisms like surgery or finance professionals in client-facing roles, operate in a world where clients want continuity, where being reachable on a Saturday matters, where the premium is placed on personal availability and long unbroken hours. Goldin calls this 'nonlinear pay': working twice as many hours doesn't get you twice the salary — it gets you three or four times the salary. And women, who still shoulder a disproportionate share of caregiving responsibilities, are less able to sell that kind of availability. The gap, then, is not mainly a story about prejudiced hiring managers or deliberate discrimination, though those exist. It is a story about how work itself is designed — and who that design quietly rewards and quietly penalises.
Why It Matters
This reframe changes what solutions look like. If the gap were purely about bias at the point of hiring, the fix would be anonymised CVs and diversity quotas. Those may help at the margins, but Goldin's research suggests the deeper lever is workplace architecture: how hours are structured, whether roles can be genuinely shared, whether availability is artificially rewarded or actually necessary. Some of this is changing. Remote work expanded who can signal productivity without physical presence. Shared parental leave policies — when men actually use them — can start to redistribute the career penalty of caregiving. But the harder truth is this: if you are in a profession that pays a steep premium for unbroken availability, and someone in your household is absorbing the caregiving so you can maintain that availability, the pay gap is partly invisible income — a domestic subsidy that doesn't show up in any wage data. Understanding the gap this way doesn't make it less serious. It makes it more so. And it helps you see your own working arrangements — and whose flexibility is being quietly borrowed — with sharper eyes.
A Question to Ponder
In your own work or the work around you, how much of the reward structure is really paying for skill and output — and how much is paying for the willingness to be always available, and who in your life is quietly making that availability possible?
Get a new one of these every morning.
Start learning with Thinkable