Loading the international data…
One rule, many labor marketsDoes a rule built on American data travel?
Claudia Sahm built her rule on the United States, where unemployment responds to output quickly and reliably. The version here is the one in Appendix B of the paper: a five-month average of the unemployment rate, less its lowest value over the twelve months ending five months earlier, so that the comparison window never overlaps the average, with an alarm at 0.6 points. Every country is scored against recessions dated the same way, from its own quarterly real GDP; the United States keeps the NBER’s dates. Applied unchanged, the rule’s accuracy varies as much as the labor markets do. … …
Accuracy here is the AUC, which needs no threshold: the chance that a month inside a recession has a higher indicator than a month outside one, so that a perfect signal scores 100 and a coin flip 50. The threshold matters for everything else, how many recessions are caught, how early and with how many false alarms, and the charts below let you change it.
Across the peersThe alarm arrives after the recession has spread
… Unemployment lags output everywhere. What differs from country to country is how far it lags, and whether it moves at all.
Against their own recessionsOn time in some countries, late or never in others
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As in the appendix, a recession counts as caught if the alarm sounds within nine months of its start or its end. Some of those alarms were already on when the window opened, left over from an earlier downturn: in a double dip, the alarm from the first recession is often still sounding when the second begins. They count as caught, but their timing says nothing about the second recession, so the medians on this page leave them out.
The mechanismThe rule works where Okun’s law bites
How much of a recession reaches the unemployment count is measured by pass-through, the Okun coefficient: how much the unemployment rate rises over a year for each point of GDP growth lost. … …
… The OECD’s indices score the law on the books, and the way firms actually adjust can differ from it. Short-time work schemes such as Germany’s Kurzarbeit let firms cut hours rather than jobs, whatever the dismissal rules. Dual labor markets such as Spain’s concentrate the adjustment on temporary contracts that are simply not renewed, even where permanent jobs are well protected. Both change how much of a recession reaches unemployment, and neither shows up in an index of dismissal law.
… The appendix reports a stronger gradient for these twenty countries; the difference comes from revisions to the data since it was written and from one correction to the recession dating, described in the notes below.
2008–09 and 2020The same collapse, very different unemployment
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What it meansCalibrate to pass-through
An unemployment-based recession rule does not travel across borders by default. Where pass-through is weak the alarm is late and noisy, and moving the threshold only trades misses for false alarms: …
The same logic runs through the rest of the paper. Groups of workers whose unemployment responds strongly to output signal recessions early, and groups whose unemployment barely moves signal them late or not at all. For comparisons across countries, the useful grouping is by how much of a recession reaches unemployment, not by income level or by legal tradition.
Every peerCountry by country
Sorted by accuracy, at a threshold of 0.6 points. Timing is the median number of months from the start of each recession to its first alarm, leaving out alarms left over from an earlier episode. Click a row to see that country above. The euro area, 21 members since Bulgaria joined in January 2026, is shown for reference and is not counted among the peers.
Race and ethnicity abroadThree peers that count it
Only three of the peers publish unemployment by race, ethnicity or population group in their labour force surveys: the United Kingdom, by ethnic group, every quarter since 2001; Israel, for Jews and the rest of the population, every month since 2012; and Canada, by racialized group, every month since 2022. The panels apply the turning-point indicator to each group’s unemployment rate and mark when each group’s alarm first sounded, in the recessions those series cover and in Canada’s slowdown since 2023. Switch to the unemployment rates to see how far each group’s rate rose.
NotesData and methods
Unemployment. Monthly unemployment rates, seasonally adjusted, as a percent of the labor force: Eurostat’s une_rt_m for the members of the European Union, Norway, Iceland and Switzerland; the OECD’s harmonised unemployment rates for the United States, Canada, Japan, Korea, Australia and Israel; and, for the United Kingdom, whose Eurostat series ends in 2020, the Office for National Statistics series MGSX, for people aged 16 and over. The ONS publishes rolling three-month averages, labelled here by their middle month, so the British indicator is smoother and a little later than the others.
Recessions. For every country but the United States, dated with the Harding and Pagan (2002) version of the Bry–Boschan algorithm on the log of quarterly real GDP: Eurostat’s namq_10_gdp in chain-linked volumes, the OECD’s Quarterly National Accounts outside Europe, and the ONS series ABMI for the United Kingdom. A peak or trough must be the highest or lowest point within two quarters on either side, each phase must last at least two quarters and each full cycle at least five. A recession runs from the first month of the quarter after the peak to the last month of the trough quarter. One check is added to the appendix’s code, from the canonical Bry–Boschan rules: a phase counts as a recession only if GDP is lower at its trough than at its peak.
The rule and the scoring. Appendix B’s configuration: a five-month average, a twelve-month low lagged five months, and a threshold of 0.6 points. Months are scored from January 1995, once the indicator can be computed from data after that date, which puts the first scored month in September 1996 wherever the data go back that far. A recession counts as caught if the alarm sounds between nine months before it starts and nine months after it ends; an alarm episode that touches no such window is a false alarm. Two departures from the appendix’s code: a recession counts only if it reaches the months that can be scored (the appendix also counts recessions that ended before a country’s unemployment data begin, as misses), and a value exactly at the threshold sounds the alarm. Switzerland’s monthly series begins in 2010, Israel’s in 2012 and Iceland’s in 2003, so each is scored on fewer recessions than the rest.
Pass-through and institutions. The Okun coefficient is estimated for each country from 1995 on, by regressing the four-quarter change in its quarterly average unemployment rate on four-quarter growth in real GDP, in log points (Ball, Leigh and Loungani 2017). Employment protection is measured by the OECD’s indicators, version 4, for regular contracts, temporary contracts and collective dismissals, averaged over the years since 1995; the OECD does not cover Bulgaria, Croatia, Cyprus, Malta or Romania. Ireland’s GDP is swollen by the accounts of multinational firms, which weakens its Okun relationship.
Code and data. Everything on this page is built by data-source/International_Turning_Points.Rmd, which reads the source files in data-source/intl/raw/ and writes data/intl_series.csv, each country’s unemployment rate and indicator by month, and data/intl_summary.json, the recession dates, scores, pass-through, institutions and the 2008–09 and 2020 episodes. A scheduled workflow downloads fresh data from Eurostat, the OECD and the ONS twice a month and rebuilds both files. When you change the threshold, the page recomputes the alarms in your browser; at 0.6 points its numbers match the file’s.