Pre-registration
In OECD panels from 1990 to 2023, collective-bargaining systems where legal or administrative extension raises bargaining coverage far above union membership predict weaker labour-market entry for young workers and lower new-business density. The directional claim is that a 10 percentage-point increase in the bargaining-extension gap is associated with at least a 0.7 percentage-point lower youth employment rate and lower new-business density, conditional on the business cycle, education, tax wedge, and institutional quality.
Falsification criterion — what would disprove this
This hypothesis is considered falsified if:
Refuted if the bargaining-extension gap coefficient is zero or positive for youth employment, or if the coefficient on new-business density is non-negative after controlling for GDP growth, tax wedge, education, and regulatory quality. A result concentrated only in recession years is treated as inconclusive rather than support.
formal test & threshold
test: panel_fe_bargaining_extension_youth_entry threshold: beta_extension_gap_youth_employment_10pp <= -0.7pp and beta_extension_gap_new_business_density < 0
Method
- Template
panel_fe- Fixed effects
country, year- Clustering
country- Sample
- 38 countries · 1990 – 2023
- Evidence type
- associational
Two-way FE panel with bargaining-extension gap as the treatment. Robustness checks use five-year averages, exclude countries with Ghent-style union unemployment insurance, and compare youth outcomes to prime-age outcomes as a placebo.
Data
| Variable | Source | Transform |
|---|---|---|
youth_employment_rate outcome | ilostat:EMP_2EMP_SEX_AGE_RT_Atier 2 | level_pct |
new_business_density outcome | world_bank_wdi:IC.BUS.NDNS.ZStier 2 | level |
bargaining_extension_gap treatment | oecd:collective_bargaining_coverage_minus_union_densitytier 2 | difference_pct_points |
collective_bargaining_coverage treatment | oecd:DSD_TUtier 2 | level_pct |
real_gdp_growth control | world_bank_wdi:NY.GDP.MKTP.KD.ZGtier 2 | level_pct |
low_wage_tax_wedge control | oecd:taxing_wages_67_percent_average_wagetier 2 | level_pct |
tertiary_enrolment control | world_bank_wdi:SE.TER.ENRRtier 2 | level_pct |
regulatory_quality control | wgi:RQ.ESTtier 4 | level |
● ready · ● pending · ● reconstruct-needed
Detailed result card
Result card — oecd_bargaining_extension_youth_entry_penalty
Verdict: PARTIAL — coef=-0.0329, p=0.681 (above α=0.1); direction inconclusive
Pre-registration
- Claim: In OECD panels from 1990 to 2023, collective-bargaining systems where legal or administrative extension raises bargaining coverage far above union membership predict weaker labour-market entry for young workers and lower new-business density. The directional claim is that a 10 percentage-point increase in the bargaining-extension gap is associated with at least a 0.7 percentage-point lower youth employment rate and lower new-business density, conditional on the business cycle, education, tax wedge, and institutional quality.
- Falsification rule: Refuted if the bargaining-extension gap coefficient is zero or positive for youth employment, or if the coefficient on new-business density is non-negative after controlling for GDP growth, tax wedge, education, and regulatory quality. A result concentrated only in recession years is treated as inconclusive rather than support.
- Falsification test: panel_fe_bargaining_extension_youth_entry
Estimate
- Method: linearmodels.PanelOLS
- Coefficient (treatment): -0.0329
- Std error: 0.07995
- p-value: 0.681
- Observations: 641, countries: 38
- Within R²: 0.0566
- Fixed effects: entity=True, time=True
- Clustering: country
Variables resolved
ilostat:EMP_2EMP_SEX_AGE_RT_A→ youth_employment_rate (outcome, publisher=world_bank_wdi, n=8071)world_bank_wdi:IC.BUS.NDNS.ZS→ new_business_density (outcome, publisher=world_bank_wdi, n=2451)oecd:DSD_TU@DF_TU→ collective_bargaining_coverage (treatment, publisher=oecd, n=1825)world_bank_wdi:NY.GDP.MKTP.KD.ZG→ real_gdp_growth (controls, publisher=world_bank_wdi, n=13897)world_bank_wdi:SE.TER.ENRR→ tertiary_enrolment (controls, publisher=world_bank_wdi, n=7217)wgi:RQ.EST→ regulatory_quality (controls, publisher=wgi, n=5169)
Variables missing data
oecd:collective_bargaining_coverage_minus_union_density(treatment, name=bargaining_extension_gap) — vintage not on diskoecd:taxing_wages_67_percent_average_wage(controls, name=low_wage_tax_wedge) — vintage not on disk
Generated by scripts/run_panel_fe.py at 2026-06-29T17:53:48+00:00
Strongest opposing argument
Every hypothesis ships with its charitable opposing argument. The framework earns credibility by handling objections at their strongest, not weakest.
Notes
Candidate Worker C spec. This directly tests whether labour-market-control tools that extend negotiated terms beyond union members reduce entry margins, without assuming the answer.