NATIONAL BUREAU OF ECONOMIC RESEARCH
NATIONAL BUREAU OF ECONOMIC RESEARCH

NBER Working Papers by Søren Leth-Petersen

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Working Papers

October 2013Measuring the Accuracy of Survey Responses using Administrative Register Data: Evidence from Denmark
with Claus Thustrup Kreiner, David Dreyer Lassen: w19539
This paper shows how Danish administrative register data can be combined with survey data at the person level and be used to validate information collected in the survey. Register data are collected by automatic third party reporting and the potential errors associated with the two data sources are therefore plausibly orthogonal. Two examples are given to illustrate the potential of combining survey and register data. In the first example expenditure survey records with information about total expenditure are merged with income tax records holding information about income and wealth. Income and wealth data are used to impute total expenditure which is then compared to the survey measure. Results suggest that the two measures match each other well on average. In the second example we compar...
November 2012Active vs. Passive Decisions and Crowdout in Retirement Savings Accounts: Evidence from Denmark
with Raj Chetty, John N. Friedman, Torben Nielsen, Tore Olsen: w18565
Using 41 million observations on savings for the population of Denmark, we show that the impacts of retirement savings policies on wealth accumulation depend on whether they change savings rates by active or passive choice. Subsidies for retirement accounts, which rely upon individuals to take an action to raise savings, primarily induce individuals to shift assets from taxable accounts to retirement accounts. We estimate that each $1 of government expenditure on subsidies increases total saving by only 1 cent. In contrast, policies that raise retirement contributions if individuals take no action – such as automatic employer contributions to retirement accounts – increase wealth accumulation substantially. We estimate that approximately 15% of individuals are “active savers” who respond t...

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