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2010 and 2011 - Census Bureau

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Table A-5.3.<br />

longitudinAl eMployer-HouseHold dynAMics (leHd) dAtA<br />

data product description<br />

Business Register<br />

Bridge<br />

Employer<br />

Characteristics<br />

File<br />

Employment<br />

History File<br />

Geocoded<br />

Address List<br />

Individual<br />

Characteristics<br />

File<br />

The Business Register Bridge (BRB) is a link between LEHD employer<br />

microdata <strong>and</strong> Business Register (BR) firms, <strong>and</strong> establishment<br />

microdata. Since the concepts of “firm” <strong>and</strong> “establishment” differ<br />

between the LEHD employer microdata <strong>and</strong> the BR, the BRB provides<br />

a crosswalk at various levels of business-unit aggregation. The most<br />

detailed crosswalk is at the level of Employer Identification Number<br />

(EIN)—State-four-digit St<strong>and</strong>ard Industry Classification (SIC) Industry-<br />

County. The bridge includes the full list of establishments in the<br />

LEHD data <strong>and</strong> in the BR that are associated with the business units<br />

(e.g., EIN-four-digit SIC-State-County) in the crosswalk <strong>and</strong> measures<br />

of activity (e.g., employment, sales).<br />

The Employer Characteristics File (ECF) consolidates most firm-level<br />

information (size, location, industry, etc.) into two easily accessible<br />

files. The firm-level file has one record for every year <strong>and</strong> quarter in<br />

which a firm is present in either the covered Employment <strong>and</strong> Wages<br />

(ES-202) program data or the unemployment insurance system<br />

(UI) wage records. Firms are identified by the LEHD State Employer<br />

Identification Number (SEIN). The data in the firm-level file is aggregated<br />

from the core establishment-level file, where establishments<br />

are identified by reporting unit number within SEIN, called SEINUNIT.<br />

The Employment History File (EHF) provides a full time series of<br />

earnings at all within-state jobs for all quarters covered by the LEHD<br />

system <strong>and</strong> provided by the state. It also provides activity calendars<br />

at a job, firm <strong>and</strong> sub-firm reporting unit level. It can be linked to<br />

other <strong>Census</strong> <strong>Bureau</strong> files through the Protected Identity Key (PIK)<br />

<strong>and</strong> the LEHD SEIN.<br />

The Geocoded Address List (GAL) is a dataset containing unique<br />

commercial <strong>and</strong> residential addresses in a state geocoded to the census<br />

block <strong>and</strong> latitude/longitude coordinates. It consists of the GAL<br />

<strong>and</strong> a crosswalk for each processed file-year. The GAL contains each<br />

unique address, a GAL identifier, its geocodes, a flag for each fileyear<br />

in which it appears, data quality indicators, <strong>and</strong> data processing<br />

information. The GAL Crosswalk contains the GAL identifier.<br />

The Individual Characteristics File (ICF) for each state contains one<br />

record for every person who has ever been employed in that state<br />

over the period spanned by the state’s unemployment insurance<br />

records. It consolidates information from multiple input sources on<br />

gender, age, citizenship, point-in-time residence, <strong>and</strong> education.<br />

Information on gender, education, <strong>and</strong> age is imputed ten times<br />

when missing.<br />

new or<br />

updated<br />

years<br />

1990–2008<br />

1989–2008<br />

1985–2008<br />

1990–2008<br />

1985–2008<br />

U.S. <strong>Census</strong> <strong>Bureau</strong> Research at the Center for Economic Studies <strong>and</strong> the Research Data Centers: <strong>2010</strong>–<strong>2011</strong> 79

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