The effects of electronic monitoring on offenders and their families

Published: 01 July 2025

Author: Julien Grenet, And Hans Grönqvist, And Susan Niknami, And

Electronic monitoring (EM) has emerged as a popular tool for curbing the growth of large prison populations. Evidence on the causal effects of EM on criminal recidivism is, however, limited and it is unclear how this alternative to incarceration affects the labor supply of offenders and the outcomes of their family members. We study the countrywide expansion of EM in Sweden in 1997 wherein offenders sentenced to up to three months in prison were granted the option to substitute incarceration with EM. Our difference-in-differences estimates, which compare the change in the prison inflow rate of treated offenders to that of non-treated offenders with slightly longer sentences, show that the reform significantly decreased the number of incarcerations. Our main finding is that EM not only lowers crimi-nal recidivism but also increases labor supply. Additionally, EM improves the educational attainment and early-life earnings of the children whose parents were exposed to the reform. The primary mechanisms through which EM operates appear to involve the preservation of offenders’ ties to the labor market, by reducing the barriers to both finding a job and changing employers. Our calculations suggest that the social benefits stemming from EM are about seven times larger than the fiscal savings associated with reduced prison expenditures, implying that the welfare gains from EM could be much greater than previously acknowledged.

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IFAU-Working paper 2025:12 "The effects of electronic monitoring on offenders and their families" is written by Julien Grenet from Paris School of Economics and CNRS, Hans Grönqvist from Linnaeus University and Susan Niknami from Stockholm University. For more information contact Hans Grönqvist, e-mail: hans.gronqvist@ifn.se or phone: 070 243 9775.