Ease of hiring/firing, collective-bargaining scope, minimum wage rigidity, temporary/permanent contract regulation.
The Trade Boards Act introduced statutory wage-setting machinery in a small group of notoriously low-paid or "sweated" trades, allowing boards of employers, workers, and neutral members to fix minimum rates. It did not create a general national minimum wage, but it marked an early and important move away from the older liberal assumption that wages should be left entirely to contract and market bargaining even in sectors with extreme power imbalance and chronic low pay.
Per invariant 3, reforms are scored by what they did on each channel-separated axis, not by the party that enacted them. This fingerprint is how the policy-match engine finds historical analogues.
Explicit links are curated by the author. Inferred links are hypotheses in the library that test the same axes this policy moved — the framework's answer to "what does the data say about a policy like this?".
Ranked by axis-fingerprint overlap with this policy. Direction match bolded — those are the closest historical analogues. Shape of the match is what drives policy-outcome comparison, not the country or party label.