Effects of employer-sponsored health insurance costs on Social Security taxable wages.
Level 3 - non-randomized controlled study
Level 3 by design analogy (repeated cross-sectional/trend analysis of economic survey data, non-clinical CEBM)
What was done
The authors used Medical Expenditure Panel Survey (MEPS) data from 1996 to 2008 to analyze trends in employer-sponsored health insurance contributions and how those costs were distributed across the wage distribution, specifically comparing workers earning above versus below the Social Security taxable maximum.
What was found
Employer health insurance contributions grew faster than overall compensation between 1996 and 2008, with contribution growth being only slightly faster among workers earning below the taxable maximum compared to those earning above it. Because these contributions constitute a larger proportion of total compensation for lower earners, rising health insurance costs placed disproportionate downward pressure on money wages below the taxable maximum. The abstract reports no specific numerical values.
Why it matters
Rising employer-paid health insurance costs reduce the share of compensation paid as taxable money wages, especially for workers below the taxable maximum, effectively eroding the Social Security payroll tax base.
Limits
The abstract reports no sample sizes, effect magnitudes, or statistical uncertainty. The analysis is based on observational survey data ending in 2008, prior to major healthcare policy changes.
Cited by
- supports The Social Security payroll tax has an income cap of $160,000.