Labour Force Survey 1993

Sri Lanka, 1993

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Reference ID

LKA_1993_LFS_v01_M

Producer(s)

Department of Census and Statistics

Metadata

DDI/XML JSON

Study website

Created on

Sep 15, 2013

Last modified

Mar 29, 2019

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6094

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Identification

Survey ID number

LKA_1993_LFS_v01_M

Title

Labour Force Survey 1993

Country

Name	Country code
Sri Lanka	LKA

Study type

Labor Force Survey [hh/lfs]

Series Information

Sri Lanka Labour Force Survey (LFS) was designed to measure the levels and trends of employment, unemployment and labour force in Sri Lanka.

Since 1990, the survey is being conducted quarterly. 1993 is the fourth successive year in which the survey has been repeated. Up to 1993, sixteen quarters have been completed at the rate of four surveys per year. The Quartely sample size is 2000 housing units through which national estimates ( excluding Nothern and Eastern provinces) are usually computed.

A nationally representative sample of about 10,080 housing units have been covered in this survey.

Amongst other figures, Provincial level estimates are taken from the Annual LFS 1993 data file which is a combination of all the four quarterly files processed for the year 1993.

Abstract

The employment/unemployment data are required at very short intervals to monitor the program made in the employment generating policies of the government. To satisfy this need, Sri Lanka Labour Force Survey was designed as a quarterly basis survey to measure the levels and trends of employment, unemployment and labour force in Sri Lanka. Thus the survey is repeated four times each year since the first quarter of 1990.

Key objectives of the survey

To study the economically active / inactive population.
To analyze employment by major industry group and employment status.
To determine unemployment rates by level of education and by age group
To study the informal sector employment.
To determine the underemployment rates by sector and by major industries

Kind of Data

Sample survey data [ssd]

Unit of Analysis

Individuals from the population aged 10 years or more

Version

Version Description

v1.0: Full edited dataset, original version for internal DPD use.

Version Date

2008-06-04

Scope

Notes

The scope of LFS 1993 includes the following key sections:-
1). Identification Information
2). Control Data
3). Personal Information
4). Information on Labour Force

Identification and Personal Information are as follows:-

Identification Information

Address, Province, District, D.S. Division, G. N. Division, Sector, Name of MC/UC/PS
Name of Ward/Village/Estate, Census Block Number, Sample Reference Number
Survey Quarter, Number of households, Name of the Head of the household
Identifications of Interviewers & Supervising Officers

Personal Information

Relationship to Head of Household, Gender, Age, Ethnic Group, Religion, Marital Status
Educational Attainment, Attendance at Schooling or other Educational Institution
Professional / Technical Training, Persons who are working abroad

Topics

Topic	Vocabulary	URI
LABOUR AND EMPLOYMENT [3]	CESSDA	http://www.nesstar.org/rdf/common

Coverage

Geographic Coverage

National Coverage

Inmates of institutions, military camps, and lodgings have not been surveyed. Households with more than 5 lodgers and boarders were also excluded from the survey.

Universe

Working age population (10 years and above) living in the non-institutional households in Sri Lanka

Producers and sponsors

Primary investigators

Name	Affiliation
Department of Census and Statistics	Ministry of Finance and Planning

Sampling

Sampling Procedure

The Survey is conducted quarterly to produce estimates of employment, unemployment, labour force participation and basic demographic characteristics. The scope of coverage includes all households in Sri Lanka.

A stratified two-stage probability sample design is used with census blocks as primary sample units (PSUs) and housing units as secondary and final sampling units (SSUs). There are three levels of stratifications which increase the efficiency of the sample design. The first level consists of the 19 domains for which separate annual estimates are calculated - the greater Colombo area plus nine provinces each divided into urban and rural sectors.

The total annual sample size is 10,080 housing units, distributed as 252 blocks (PSUs) per each quarter and 10 housing units (SSUs) per block. The allocation to the domain aims at ensuring approximately equal levels of reliability from domain to domain.

Thousand and eight (1008) blocks were selected with probability proportional to size from the 1981 Census list of approximately 70,000 census blocks. A listing operation was conducted in each selected block to provide a frame for the second stage of selection. The selection of housing units within blocks was systematic with random start.

Deviations from the Sample Design

The survey covered all parts of the Island excluding the Northern and the Eastern provinces

Weighting

Two stage sample design was used

(1) The probability of selecting the i-th psu(block)=p1
(2) The probability of selecting the j-th household ( in the i-th psu) =p2

           Overall probability (p) = no.of psu's (in the stratum(nh)) x p1 x p2
           Sample weight (Wh)=1/p
Final weight=Wh x non-response factor x population under coverage adjustment .

Survey instrument

Questionnaires

The questionnaire covered questions under four main headings such as

Identification Information
Control data
Personal Information
Labour force Information
Questions common to all employed persons

Current survey concepts and methods are very similar to those introduced at the beginning of the
survey in 1990. However, some changes have been made over the years to improve the accuracy and
usefulness of the data. [Questionnaire is attached in the External Resources section].

Data collection

Dates of Data Collection

Start	End	Cycle
1993-01-01	1993-12-31	12 months

Data Collectors

Name	Affiliation
Department of Census and Statistics	Ministry of Finance and Planning

Data Collection Notes

Data are collected quarterly during a similar time period (eg every third week of the quarter) in each quarter through a scientifically selected sample designed to represent the non-institutional household population. About 2500 households are visited each quarter. Respondents are interviewed to obtain information about each member of the household whose age is 10 years or over.

The inquiry relates to the previous calendar week of the interview to obtain "current" information, and to the previous 12 calendar months to obtain "usual" activity information.

[Inmates of institutions, military camps, and lodgings are not surveyed. Households with more than 5 lodgers and boarders were excluded from the survey.]

Data Access

Access authority

Name	Affiliation	URL	Email
Director General	Department of Census and Statistics	http//:www.statistics.gov.lk	dgcensus@sltnet.lk

Confidentiality

Is signing of a confidentiality declaration required?	Confidentiality declaration text
yes	Under the Statistical ordinance, micro data cannot be released with identifications for public use. Procedures are in place to ensure that information relating to any particular individual person, household or undertaking will be kept strictly confidential and will not be divulged to external parties. Information on individual or individual Household/establishment will not be divulged or published in such a form that will facilitate the identification of any particular person or establishment as the data have been collected under the Census/Statistical ordinance, according to which the information at individual level cannot be divulged and such information is strictly confidential.

Access conditions

The dataset has been anonymized and is available as a Public Use Dataset. It is accessible to all for statistical and research purposes only, under the following terms and conditions:

The data and other materials will not be redistributed or sold to other individuals, institutions, or organizations without the written agreement.
The data will be used for statistical and scientific research purposes only. They will be used solely for reporting of aggregated information, and not for investigation of specific individuals or organizations.
No attempt will be made to re-identify respondents, and no use will be made of the identity of any person or establishment discovered inadvertently.
No attempt will be made to produce links among datasets provided by the Department or among data from the Department and other datasets that could identify individuals or organizations.
Any books, articles, conference papers, theses, dissertations, reports, or other publications that employ data obtained from the Department will cite the source of data in accordance with the Citation Requirement provided with each dataset.
An electronic copy of all reports and publications based on the requested data will be sent to the Department

The following rules apply to micro data released by the Department of Census and Statistics.

• Only the requests of Government Institutions, Recognized Universities, Students, and selected international agencies are entertained. However, the Data users are required to strictly adhere to
the terms stipulated in the agreement form.

• All the data requests should be made to Director General (DG) of the DCS as the sole authority of releasing data is vested with the DG, DCS. DCS of Sri Lanka reserves sole right to approve or reject any data request made depending on the confidential nature of the data set and intended purpose of the study or analysis.

• Requests for micro data should be made through the agreement form designed by DCS for this purpose (Form D.R.1). The agreement form should be filled in triplicate and the Study/project proposal should accompany the filled agreement form. If requests are made for the micro data of more than one survey, a separate agreement should be signed.

• If the data request is from a student a letter from the respective Dept. Head/Dean/Supervisor, recommending the issue of data, should also be accompanied.

• If the request is approved only 25% of the data file is released at the first stage. The release of the total data file is considered only after reviewing the draft report prepared on the basis of the 25% sample data file.

• The released Data file should be used only for the specific study/Analysis mentioned in the agreement form and shall not be used for any other purpose without the prior approval of the Director General of the DCS. Moreover, Copies of the micro-data file, obtained from the DCS, shall not be given to anyone else without the prior written approval of the Director General of the DCS.

• The draft report of the Study/Analysis should be submitted to the DCS and the concurrence of the DG, DCS, should be obtained before publishing it. Once published, a copy of the final report should be submitted to the DCS.

[Department : The Department of Census and Statistics]
Source : http://www.statistics.gov.lk/databases/data%20dissemination/DataDissaPolicy_2007Oct26.pdf

Citation requirements

"Department of Census and Statistics, Sri Lanka Labour Force Survey - 1993, Version 1.0 of the public use dataset (June 2008), provided by the National Data Archive, Data Processing Division, www.statistics.gov.lk"

Disclaimer and copyrights

Disclaimer

The Department of Census and Satatistics bears no responsibility for any results or interpretations arising from the secondary use of the data.

Contacts

Name	Affiliation	Email	URL
Information Unit	Department of Census & Statistics	information@statistic.gov.lk	http//:www.statistics.gov.lk
Sample Survey Division	Department of Census & Statistics	sample.survey@statistic.gov.lk	http//:www.statistics.gov.lk
Microdata Library	World Bank	microdatalib@worldbank.org

Metadata production

DDI Document ID

DDI_LKA_1993_LFS_v01_M_WB

Producers

Name	Affiliation	Role
Department of Census and Statistics	Minstry of Finance & Planning	Data Collection

Date of Metadata Production

2008-06-04

Metadata version

DDI Document version

Version 1.0 ( June 2008 ).
Version 2.0 (August, 2013).DDI and ID numbers edited by World Bank for World Bank Microdata Library.

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