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Confidentiality Protection in the Census Bureau Quarterly Workforce Indicators

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Author Info
John Abowd
Bryce Stephens
Lars Vilhuber

Additional information is available for the following registered author(s):

Abstract

The QuarterlyWorkforce Indicators are new estimates developed by the Census Bureau’s Longitudinal Employer-Household Dynamics Program as a part of its Local Employment Dynamics partnership with 37 state Labor Market Information offices. These data provide detailed quarterly statistics on employment, accessions, layoffs, hires, separations, full-quarter employment (and related flows), job creations, job destructions, and earnings (for flow and stock categories of workers). The data are released for NAICS industries (and 4-digit SICs) at the county, workforce investment board, and metropolitan area levels of geography. The confidential microdata - unemployment insurance wage records, ES-202 establishment employment, and Title 13 demographic and economic information - are protected using a permanent multiplicative noise distortion factor. This factor distorts all input sums, counts, differences and ratios. The released statistics are analytically valid - measures are unbiased and time series properties are preserved. The confidentiality protection is manifested in the release of some statistics that are flagged as "significantly distorted to preserve confidentiality." These statistics differ from the undistorted statistics by a significant proportion. Even for the significantly distorted statistics, the data remain analytically valid for time series properties. The released data can be aggregated; however, published aggregates are less distorted than custom postrelease aggregates. In addition to the multiplicative noise distortion, confidentiality protection is provided by the estimation process for the QWIs, which multiply imputes all missing data (including missing establishment, given UI account, in the UI wage record data) and dynamically re-weights the establishment data to provide state-level comparability with the BLS’s Quarterly Census of Employment and Wages.

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File URL: http://lehd.did.census.gov/led/library/techpapers/tp-2006-02.pdf
File Format: application/pdf
File Function: First version, 2006
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Publisher Info
Paper provided by Longitudinal Employer-Household Dynamics, Center for Economic Studies, U.S. Census Bureau in its series Technical Papers with number 2006-02.

Download reference. The following formats are available: HTML (with abstract), plain text (with abstract), BibTeX, RIS (EndNote, RefMan, ProCite), ReDIF
Length: 31 pages
Date of creation: Feb 2006
Date of revision:
Handle: RePEc:cen:tpaper:2006-02

Contact details of provider:
Web page: http://lehd.did.census.gov/led/library/techpapers.html

For technical questions regarding this item, or to correct its listing, contact: (Sang V. Nguyen).

Related research
Keywords: Confidentiality; Noise addition; QuarterlyWorkforce Indicators; Analytic validity; Multiple imputation;

Cited by:
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  1. John Abowd & Bryce Stephens & Lars Vilhuber, 2006. "The LEHD Infrastructure Files and the Creation of the Quarterly Workforce Indicators," Technical Papers 2006-01, Longitudinal Employer-Household Dynamics, Center for Economic Studies, U.S. Census Bureau. [Downloadable!]
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This page was last updated on 2009-11-22.


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