A Correction: Amazon Led Eight of Ten Industries Because We Read Amazon
Based on 257,534+ analyzed job listings · Updated 2026-08-16
This page ranked ten industries by how much of their hiring the ten largest employers hold, from healthcare at 49.3% down to marketing at 12.4%, and reported as a finding that Amazon was the largest employer in most of them. Re-checked as part of a sweep for a mistake we had already made three times today, the ranking does not survive. Amazon is the largest employer in eight of those ten rows because we run a dedicated Amazon connector that contributes postings to every industry. Healthcare's leader is Kaiser Permanente and finance's is JPMorgan Chase, both also employers whose own career systems we read directly. Held to a single broad job board where no employer has a private pipe into our corpus, the shares roughly halve and the order changes substantially. One finding does survive, and it is the one the page was really about.
Healthcare 49.3%, marketing 12.4%
What this page claimed
Retained as the figures being corrected, not as current claims
27.8% and 9.2%
Held to one broad board
The same two industries, measured inside himalayas alone
10 of 10
Rows whose largest employer is a direct connector
Amazon in eight, plus Kaiser Permanente and JPMorgan Chase
2nd to last
Operations, published rank vs controlled rank
30.9% pooled, 7.0% inside one board
8th to 2nd
Design, published rank vs controlled rank
The ranking is not stable under the control
Healthcare is most concentrated
The finding that survives
27.8% against a next-highest 13.8%, inside a single board
Top-ten employer share: as published, and with the source held constant
| Industry | As published (all sources) | Inside one broad board | Largest employer as published | Do we ingest them directly? |
|---|---|---|---|---|
| Healthcare | 49.3% | 27.8% | Kaiser Permanente | Yes, dedicated feed |
| Operations | 30.9% | 7.0% | Amazon | Yes, dedicated feed |
| Finance | 29.9% | 7.9% | JPMorgan Chase | Yes, their own portal |
| Engineering | 22.5% | 8.9% | Amazon | Yes, dedicated feed |
| Design | 15.7% | 13.8% | Amazon | Yes, dedicated feed |
| Marketing | 12.4% | 9.2% | Amazon | Yes, dedicated feed |
The control column is computed inside himalayas alone, the largest broad board in our corpus, where no employer has a direct pipe into our data. Healthcare stays first and roughly doubles the next industry, which is the one result that holds. Everything else reorders: operations falls from second to sixth, design rises from eighth to second. A ranking that reorders under its own control is not a ranking.
Source: Seeker job corpus, 257,534 active job postings, snapshot 2026-08-16. seekerscore.com/insights/employer-concentration-2026
Correction, 2026-08-16
What this page claimed: 'In Healthcare, Ten Employers Post Half the Jobs. In Marketing, an Eighth,' a ten-row ranking of industries by top-ten employer share, and a section headed 'Amazon is the largest employer in seven of eleven industries.' What is true: Amazon is the largest employer in most rows because we run a dedicated Amazon connector, which contributes 15,148 active postings spread across every industry we classify. Healthcare's largest is Kaiser Permanente, whose career system we also read directly, and finance's is JPMorgan Chase, whose own careers portal is one of our sources. In all ten rows, the largest employer is one we ingest directly. That column was reporting our integrations list.
The control, and what it did to the ranking
The test is to compute the same measure inside a single broad job board, where no employer has a private pipe into our corpus. Using himalayas, the largest such board we carry: healthcare 27.8%, design 13.8%, marketing 9.2%, engineering 8.9%, finance 7.9%, operations 7.0%. Two things happen. The shares roughly halve, because pooling across sources lets a directly-connected employer stack up in a way no single board would show. And the order changes: operations falls from second place to last, design climbs from eighth to second. A ranking whose order is not stable when you hold the source constant was never measuring the thing it named.
What survives, and it is the useful part
Healthcare really is the most employer-concentrated field we measure. It leads under the control at 27.8% against a next-highest of 13.8%, roughly double, and it led before the control too. That is a genuine structural fact and it is the fact the page existed to convey: in healthcare, a small number of large systems do a disproportionate share of the hiring, so identifying and tracking those employers is a better use of effort than broad applying. The strategic advice in the original page follows from that and is unchanged for healthcare. What we can no longer support is the precise share, the ordering of the other nine industries, or any claim about which single employer leads a field.
What is withdrawn
The 49.3% and 12.4% headline figures and every other absolute top-ten share. The ten-row ranking. The 'largest employer' column in its entirety. And the section reporting that Amazon leads most industries, which was our connector list presented as a market observation. We are not publishing corrected absolute shares, for the same reason we did not on the metro page: an honest employer-concentration figure requires seeing a representative sample of an industry's employers, and a corpus assembled partly from individual employers' own career systems does not.
How we measured it (and what we did not claim)
The correction is a within-source recomputation of the same measure over the same corpus on 2026-08-16: top-ten employer share per industry, computed first across all sources as originally published, then inside himalayas alone. Industries are our own domain classifier, unchanged. We are NOT claiming Amazon is not a large employer, which it obviously is, nor that healthcare is not concentrated, which the control supports. We are claiming that the size of an employer in our corpus is a function of whether we read their careers system directly, so 'largest employer' is not a measurement we are able to make. The other two figures this page published, that 52.2% of employers post in one function and that broad employers hold 79.2% of listings, are counts over the employers we happen to see and are scoped to the corpus rather than the market; they are left in place with that caveat rather than presented as market structure. This is the fourth correction today from one root cause: a claim built by comparing our own copy of the world against itself.
Frequently asked questions
Do ten employers really post half of healthcare jobs?
Not at that rate. Measured inside a single broad job board, where no employer feeds us directly, healthcare's top ten hold 27.8% rather than 49.3%. Healthcare is still the most concentrated field we measure, by roughly two to one over the next, so the direction holds and the magnitude does not.
Is Amazon the largest employer in most industries?
In our corpus, yes, and that is the problem with the claim. We run a dedicated Amazon connector contributing over 15,000 active postings across every industry we classify. The 'largest employer' column was reporting which companies we integrate with, not which companies hire most.
Should I target specific employers or apply broadly?
In healthcare, targeting large systems is well supported: it is genuinely the most employer-concentrated field, and that survives the control. For other fields we withdrew the ranking, so we cannot tell you where concentration is high or low with any confidence.
Why did this page change?
A sweep of all our insight pages for one specific defect: a claim built by comparing our own data against itself and then generalised to the labour market. This page ranked industries using a measure that is directly distorted by which employers' career systems we read, so the ranking was partly a description of our own integrations.
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Guides
Dataset & citation
- Dataset
- 257,534+ active job postings
- Collected
- Full active corpus, within-source recomputation run 2026-08-16
- Last verified
- 2026-08-16
- Methodology
- How we measure
Suggested citation
SeekerScore. "Correction: Our Employer-Concentration Ranking Was a List of Our Own Connectors (2026 Data)." Analysis of 257,534+ job postings, 2026-08-16. https://www.seekerscore.com/insights/employer-concentration-2026
Data derived from Seeker's job corpus of 257,534+ listings across multiple sources. Updated 2026-08-16. Individual results vary based on resume content, target market, and role specifics.