Pre-registration
Worker cooperative conversions (US Main Street Employee Ownership Act 2018, Italian Marcora Law 1985) preserve employment in firms that would otherwise close.
Falsification criterion — what would disprove this
This hypothesis is considered falsified if:
The hypothesis is considered falsified if the pre-registered empirical test shows the opposite direction of the claim at conventional significance (p > 0.10), or if the primary outcome measure moves less than 10% in the claimed direction across the sample. Exact thresholds will be pinned in the variables and estimator blocks when this stub is promoted from draft.
formal test & threshold
test: Callaway-Sant'Anna staggered DiD on Marcora and Main Street Act conversions vs matched-distress closure comparators 1985-2023; supported if 5y survival rate exceeds comparator by >20pp at p<0.10.
Method
- Template
did_callaway_santanna- Fixed effects
firm, year- Clustering
firm- Sample
- 2 countries · 1985 – 2023
- Evidence type
- associational
Staggered DiD across worker-coop conversions (Italy Marcora-law conversions, US Main Street Employee Ownership Act) using matched-closure comparators (firms with similar pre-conversion distress signals that closed instead of converting). Outcomes: survival, employment, wages.
Data
| Variable | Source | Transform |
|---|---|---|
firm_survival_indicator outcome | derived:firm_survival_paneltier 4 | indicator |
firm_employment outcome | derived:firm_employment_paneltier 4 | log |
firm_real_wage outcome | derived:firm_wage_paneltier 4 | log |
regional_cooperative_employment_share outcome | eurostat:nama_10r_2emhrwtier 1 | share |
coop_conversion_event treatment | derived:coop_conversion_datestier 4 | indicator |
matched_closure_pretrend control | derived:matched_closure_donorstier 4 | ratio |
gdp_per_capita_real control | world_bank_wdi:NY.GDP.PCAP.KDtier 2 | log |
unemployment_rate control | world_bank_wdi:SL.UEM.TOTL.ZStier 2 | level |
● ready · ● pending · ● reconstruct-needed
Detailed result card
Result card — worker_coop_conversion_employment_preservation
Verdict: PARTIAL — ATT=+2.22e-15, p=0.717, N=66, treated_countries=2 (above α=0.10)
Pre-registration
- Claim: Worker cooperative conversions (US Main Street Employee Ownership Act 2018, Italian Marcora Law 1985) preserve employment in firms that would otherwise close.
- Falsification rule: The hypothesis is considered falsified if the pre-registered empirical test shows the opposite direction of the claim at conventional significance (p > 0.10), or if the primary outcome measure moves less than 10% in the claimed direction across the sample. Exact thresholds will be pinned in the variables and estimator blocks when this stub is promoted from draft.
Estimate (Callaway-Sant'Anna staggered DiD, TWFE approximation)
- coefficient: 2.220446049250313e-15
- std_error: 6.122266882028954e-15
- p_value: 0.7168412207861381
- n_obs: 66
- n_countries: 2
- r_squared_within: 1.0
- fe_entity: True
- fe_time: True
- cluster: country
- method: Callaway-Sant'Anna TWFE fallback (linearmodels failed: No module named 'linearmodels')
- n_treated_countries: 2
- cohort_years: [1991]
- dropped_controls_due_to_overlap: []
Variables resolved
derived:firm_survival_panel→ firm_survival_indicator (outcome, n=78)eurostat:nama_10r_2emhrw→ regional_cooperative_employment_share (outcome, n=9554)derived:coop_conversion_dates→ coop_conversion_event (treatment, n=78)world_bank_wdi:NY.GDP.PCAP.KD→ gdp_per_capita_real (controls, n=14066)world_bank_wdi:SL.UEM.TOTL.ZS→ unemployment_rate (controls, n=8071)
Missing data
derived:firm_employment_panel(outcome)derived:firm_wage_panel(outcome)derived:matched_closure_donors(controls)
Generated by scripts/run_did_callaway_santanna.py at 2026-04-30T15:07:38+00:00
Notes
Stub seeded from a market-socialist school prediction about worker-coop conversion employment preservation. Self-selection into conversion is severe; needs human review of matched-comparator strategy.