LEHD Public Use CSV Naming Schema v4.1b-draft

Important

This document is not an official Census Bureau publication. It is compiled from publicly accessible information by Lars Vilhuber (Labor Dynamics Institute, Cornell University). Feedback is welcome. Please write us at lars.vilhuber@cornell.edu.

1. Purpose

The public-use data from the Longitudinal Employer-Household Dynamics Program, including the Quarterly Workforce Indicators (QWI) and Job-to-Job Flows (J2J), are available for download with the following data schema. These data are available as Comma-Separated Value (CSV) files through the LEHD website’s Data page at http://lehd.ces.census.gov/data/ and through LED Extraction Tool at http://ledextract.ces.census.gov/.

This document describes the file naming schema for LEHD-provided CSV files. The contents (schema) are described in lehd_public_use_schema.html.

2. Extends

This version extends v4.0. Any file compliant with LEHD or QWI Schema v4.0 will also be compliant with this schema.

3. Supersedes

For the specified files, this is the first schema.

4. Basic Schema

All files are preceded by a file type definition, followed by additional information on the aggregation level of the file, or some other identifier.

[TYPE]_[DETAILS].csv

4.1. QWIPU from the LED Extraction Tool

CSV files downloaded through the LED Extraction Tool at http://ledextract.ces.census.gov/ follow the following naming convention:

[type]_[id].csv

where [id] is the Request ID (a unique string of characters) generated every time Submit Request'' is clicked. The ID references each query submission made to the database.

4.2. Other files

Full CSV files downloaded from the LEHD website at http://lehd.ces.census.gov/data follow the following naming convention:

[type]_[geohi]_[demo]_[fas]_[geocat]_[indcat]_[ownercat]_[sa]

where each component is described in more detail below. Schema files detailing legal values for each component can be downloaded from this website.

5. Description of Filename Components

5.1. Types

( naming_type.csv )

type	Description	Explanation	url
j2j	Job-to-Job Flows Counts (J2J)	Counts of hires and separations, to and from employment and non-employment, summed across all establishments	tbd
j2jod	Job-to-Job Flows Origin-Destination	Origin and destination flows and earnings, tabulated by the destination establishment	tbd
j2jr	Job-to-Job Flows Rates	Hiring and separation rates, to and from employment and nonemployment, summed across all establishments	http://lehd.ces.census.gov/data/j2j_beta.html
lodes	LEHD Origin-Destination Employment Statistics (LODES)	LEHD Origin-Destination Employment Statistics (LODES) used by OnTheMap. Version 7 and higher of LODES was enumerated by 2010 census blocks. Version 6 and lower of LODES were enumerated with 2000 census blocks.	http://lehd.ces.census.gov/data/#lodes
qwi	Quarterly Workforce Indicators Public Use Counts (QWIPU)	The Quarterly Workforce Indicators (QWI) are a set of economic indicators including employment, job creation, earnings, and other measures of employment flows. The QWI are reported using detailed firm characteristics (geography, industry, age, size) and worker demographics information (sex, age, education, race, ethnicity).	http://lehd.ces.census.gov/data/#qwi
qwir	Quarterly Workforce Indicators Public Use Rates	Rates for flow variables in the Quarterly Workforce Indicators (QWI)	tbd
qwirv	Quarterly Workforce Indicators Variability Measures for Rates	Variability measures for rates in the Quarterly Workforce Indicators (QWI)	tbd
qwiv	Quarterly Workforce Indicators Variability Measures	Variability measures for Quarterly Workforce Indicators (QWI)	tbd

5.2. geohi

( naming_geohi.csv )

This component is based on the alphabetic FIPS state code equivalent to the numeric FIPS code in label_fipsnum.csv, based on FIPS PUB 5-2. It is expanded to encompass additional codes denoting national coverage, or a collection of states.

type	Description
all	Collection of all available states
us	National data (50 states + DC)
st	Any legal 2-character state postal code (see naming_geohi.csv )

5.3. demo

( naming_demo.csv )

type	Description
d	No demographic detail
rh	Race by Ethnicity tabulations
sa	Sex by Age tabulations
se	Sex by Education tabulations

5.4. fas

( naming_fas.csv )

type	Description
f	No firm size or age detail
fa	Tabulations by firm age
fs	Tabulations by firm size

5.5. geocat

( naming_geocat.csv )

type	Description
gc	Counties
gm	Metropolitan/Micropolitan
gn	National (50 States + DC)
gs	States
gw	Workforce Investment Areas

5.6. indcat

( naming_indcat.csv )

type	Description
n	all industries
ns	NAICS sectors
n3	NAICS subsectors
n4	NAICS industry groups

5.7. owncat

( naming_owncat.csv )

type	Description
of	Federal government (QWI Code A01)
op	All Private (QWI Code A05)
oslp	State, local, and private ownership categories (QWI Code A00)

5.8. sa

( naming_sa.csv )

type	Description
s	Seasonally adjusted
u	Not seasonally adjusted

6. Changes

6.1. This version from previous releases of this document

2015-02-25: corrected flag values
2015-02-25: documents are now identified by date, not revision
2015-03-10: Correction of the TIGER vintage that is used for geographic references
2015-03-11: Added URL for J2J
2015-03-11: Correction of typo in type naming convention, rename of naming_fipsalpha.csv to naming_geohi.csv to be consistent.
2015-03-17: Changing of naming convention for to-be-released files based on federal government from fg → of. At this time, no such files have been released.
2015-04-24: Changes to alternate name of SepSnx and EmpSpv, tentative rate names
2015-04-26: Changes to name of variable schema files (qwipu → qwi), addition of variability variable schema files.
2015-04-28: Fixed small typos in QWI variable short names

6.2. Version 4.1b-draft from 4.0

added J2J, National QWI spec
added geohi category of ALL, US
added definitions of variability measures
added definitions of rates on separate file
added naming convention for additional files