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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.
2. Schema for Data File Contents
The contents (schema) for LEHD data files are described in lehd_public_use_schema.html. The contents (schema) for shapefiles are described in lehd_shapefiles.html.
3. Extends
This version reimplements some features from V4.0. Many files compliant with LEHD or QWI Schema v4.0 will also be compliant with this schema, but compatibility is not guaranteed.
4. Supersedes
This version supersedes V4.1.0, for files released as of R2016Q4
5. 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].[EXT]| type | Used By | Description |
|---|---|---|
[type]_[id] |
qwix |
CSV files queried from the LED Extraction Tool at http://ledextract.ces.census.gov/. |
[type]_[geohi]_[demo]_[fas]_[geocat]_[indcat]_[ownercat]_[sa] |
qwi qwir qwiv qwivr j2j j2jr j2jod |
Common convention for currently provided files. |
lehd_shp_[geocat].zip |
shapefiles |
ZIP files containing data for shapefiles |
version_[demo]_[fas].txt |
metadata |
Machine-readable text files with metadata on geographic and temporal coverage for QWI |
version\_[type].txt |
metadata |
Machine-readable text files with metadata on geographic and temporal coverage for J2J |
j2jod_[geography]_avail.csv |
metadata |
Complex metadata (used only in J2JOD) - see below |
5.1. QWIPU from the LED Extraction Tool
Files downloaded through the LED Extraction Tool at http://ledextract.ces.census.gov/ follow the following naming convention:
[type]_[id].[EXT]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.
5.2. Metadata for QWI data files (version.txt)
Metadata accompanies the data files, identifying provenance, geographic and temporal coverage. These files follow the following naming convention:
version_[demo]_[fas].txtwhere each name component is described in more detail below.
5.3. Metadata for J2J data files (version.txt)
Metadata accompanies the data files, identifying provenance, geographic and temporal coverage. These files follow the following naming convention:
version_[type].txtwhere each name component is described in more detail below.
5.4. Metadata for J2JOD files
Because the origin-destination (J2JOD) data link two regions, we provide an auxiliary file with the time range for which cells containing data for each geographic pairing may appear in a data release. The reference region will always be either the origin or the destination. These files follow the following naming convention:
j2jod_[geography]_avail.csvwhere each name component is described in more detail below.
6. Description of Filename Components
6.1. 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 |
|
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. |
|
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). |
|
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 |
lehd_shp |
LEHD Shapefiles |
Shapefiles are used to provide mapping functionality in QWI Explorer and Job-to-Job Explorer |
lehd_shapefiles.html |
6.2. geohi
( naming_geohi.csv )
The geohi component is based on one of two possible code sets:
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the lower-case alphabetic FIPS or postal state code based on FIPS PUB 5-2 (see also label_stusps.csv for upper-case variants).
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the numeric CBSA code corresponding to the metropolitan areas (see label_geography_metro.csv)
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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 lower-case state postal code |
NNNNN |
Any valid CBSA-derived code listed in label_geography_metro.csv |
6.3. 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 |
sarhe |
Collection of sa-rh-se tabulations |
6.4. fas
( naming_fas.csv )
| type | Description |
|---|---|
f |
No firm size or age detail |
fa |
Tabulations by firm age |
fs |
Tabulations by firm size |
6.5. geocat
| type | Description |
|---|---|
gb |
Metropolitan (complete) |
gc |
Counties |
gm |
Metropolitan/Micropolitan (state parts) |
gn |
National (50 States + DC) |
gs |
States |
gw |
Workforce Investment Areas |
6.6. indcat
| type | Description |
|---|---|
n |
all industries |
ns |
NAICS sectors |
n3 |
NAICS subsectors |
n4 |
NAICS industry groups |
6.7. owncat
| type | Description |
|---|---|
of |
Federal government (QWI Code A01) |
op |
All Private (QWI Code A05) |
oslp |
State, local, and private ownership categories (QWI Code A00) |
6.9. ext
( naming_ext.csv )
| type | Description |
|---|---|
csv |
Comma-Separated file |
PDF file (printable) |
|
xls |
Excel file (only select output) |
xlsx |
Excel file (not available for larger files) |
7. Changes
For a description of how schema files are versioned, see main directory.
7.1. This version (revisions)
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2017-08-21: Initial release
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2017-09-01: Incorporates forgotten updates to j2japp descriptions. This does not affect the structure or contents of any released data files, but it affects the unreleased J2J app updates downstream.
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2017-09-07: clarifying the version.txt description - removed the mention of fips replacing by geonum
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2017-09-07: Moved stusps to the geography section, where it rightfully belongs.
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2017-09-07: Clarified language and usage of metropolitan area codes in label_geography_metro.csv, removed unused label_geography_cbsa.csv
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2017-09-07: Expanded definition of [geohi] to include CBSA codes for metropolitan areas
7.2. Version 4.2b-draft from V4.2a-draft
-
See Github
7.3. Version 4.2a-draft from 4.1.1
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See Github
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Important
Some of the data products noted above do not exist yet. |