Earnings Responses to Social Security Contributions: Evidence from Older Workers in Canada

Adam Lavecchia and James Stutely

No 12112, CESifo Working Paper Series from CESifo

Abstract: This paper documents sharp bunching in third-party reported employment earnings at a basic exemption for social security contributions among older workers. Beginning in 2012, workers age 60-64 who were receiving a public pension were required to make social security contributions equal to 9.9 percent of their employment earnings above a basic exemption threshold of $3,500. Using administrative data on third-party reported earnings and a differences-in- bunching estimator we document sharp bunching at the $3,500 threshold. We argue that our results represent new evidence on the role of firms in mediating the earnings response to payroll taxes.

Keywords: social security contributions; sharp bunching; employment earnings (search for similar items in EconPapers)
JEL-codes: H20 H24 H25 H31 H32 H55 J22 J23 J38 (search for similar items in EconPapers)
Date: 2025
New Economics Papers: this item is included in nep-lma
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Persistent link: https://EconPapers.repec.org/RePEc:ces:ceswps:_12112

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