Informal Sector Survey 2008
Philippines, 2008
Reference ID
PHL-NSO-ISS-2008-v2.0
Producer(s)
National Statistics Office
Metadata
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Oct 12, 2021
Last modified
Oct 12, 2021
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Identification
Informal Sector Survey 2008
Phase 1
Name | Abbreviation |
---|---|
Philippines | PHL |
PHL-NSO-ISS-2008-v2.0
The 2008 Informal Sector Survey (ISS) was a nationwide data collection operation by the
National Statistics Office, in collaboration with United Nations Economic and Social Commission
for Asia and the Pacific (UN-ESCAP). It aims at putting in place a system of 2-step surveys related
to the evaluation and the follow up of employment, informal jobs and informal sector. This is the
1st nationwide survey of informal sector conducted by the NSO.
Measurement of the informal sector and informal employment has been guided by the
international recommendations, foremost of which are the 15th International Conference of Labour
Statistics (ICLS) Resolutions concerning statistics of employment in the informal sector and the
17th ICLS Guidelines concerning a statistical definition of the informal employment, advocated by
the International Labour Organization (ILO) and the United Nations (UN) recommendations on
structural and short-term business statistics for the collection and publication of production-related
statistics of a range of economic activities.
The 15th ICLS resolution addresses the need for a systematic measurement of the
contributions of household enterprises in terms of income and employment as it situates informal
sector enterprises as a subset of household enterprises, defined as production units that produce
some or all products for the market, have a certain size limit and/or meet some registration-based
criterion. The 17th ICLS Guidelines recognized that the definition and measurement of employment
in the informal sector need to be complemented with a definition and measurement of informal
employment. “Employment in the informal sector” and “informal employment” are measures that
are both useful for analytical and policy-making purposes, as they refer to different aspects of the
“informalization” of employment and to different targets for policymaking.
OBJECTIVES OF THE INFORMAL SECTOR SURVEY
a. to identify and construct a sampling frame of IS among the enterprise in which
employed persons work;
b. To provide data for estimating employment in IS and informal sector enterprises through
the LFS;
c. To provide data for estimating informal employment; and.
d. To obtain data for estimating the contribution of informal sector enterprises to total
Gross Domestic Product (GDP).
National Statistics Office, in collaboration with United Nations Economic and Social Commission
for Asia and the Pacific (UN-ESCAP). It aims at putting in place a system of 2-step surveys related
to the evaluation and the follow up of employment, informal jobs and informal sector. This is the
1st nationwide survey of informal sector conducted by the NSO.
Measurement of the informal sector and informal employment has been guided by the
international recommendations, foremost of which are the 15th International Conference of Labour
Statistics (ICLS) Resolutions concerning statistics of employment in the informal sector and the
17th ICLS Guidelines concerning a statistical definition of the informal employment, advocated by
the International Labour Organization (ILO) and the United Nations (UN) recommendations on
structural and short-term business statistics for the collection and publication of production-related
statistics of a range of economic activities.
The 15th ICLS resolution addresses the need for a systematic measurement of the
contributions of household enterprises in terms of income and employment as it situates informal
sector enterprises as a subset of household enterprises, defined as production units that produce
some or all products for the market, have a certain size limit and/or meet some registration-based
criterion. The 17th ICLS Guidelines recognized that the definition and measurement of employment
in the informal sector need to be complemented with a definition and measurement of informal
employment. “Employment in the informal sector” and “informal employment” are measures that
are both useful for analytical and policy-making purposes, as they refer to different aspects of the
“informalization” of employment and to different targets for policymaking.
OBJECTIVES OF THE INFORMAL SECTOR SURVEY
a. to identify and construct a sampling frame of IS among the enterprise in which
employed persons work;
b. To provide data for estimating employment in IS and informal sector enterprises through
the LFS;
c. To provide data for estimating informal employment; and.
d. To obtain data for estimating the contribution of informal sector enterprises to total
Gross Domestic Product (GDP).
Sample survey data [ssd]
Employed persons 15 years old and over, Jobs
Version
v2.0 - Edited for public use
2009-01-15
This version includes only the characteristics of the employed person 15 years old and over.
Scope
Topic | Vocabulary | URI |
---|---|---|
employment [3.1] | CESSDA | http://www.nesstar.org/rdf/common |
working conditions [3.6] | CESSDA | http://www.nesstar.org/rdf/common |
keyword | URI |
---|---|
Employment | |
Working conditions |
Coverage
The 17 geographic regions:
National Capital Region
Cordillera Administrative Region
Region I - Ilocos
Region II - Cagayan Valley
Region III - Central Luzon
Region IVA - CALABARZON
Region IVB - MIMAROPA
Region V - Bicol
Region VI - Western Visayas
Region VII - Central Visayas
Region VIII - Eastern Visayas
Region IX - Zamboanga Peninsula
Region X - Northern Mindanao
Region XI - Davao
Region XII - SOCCSKSARGEN
Region XIII - Caraga
Autonomous Region in Muslim Mindanao
National Capital Region
Cordillera Administrative Region
Region I - Ilocos
Region II - Cagayan Valley
Region III - Central Luzon
Region IVA - CALABARZON
Region IVB - MIMAROPA
Region V - Bicol
Region VI - Western Visayas
Region VII - Central Visayas
Region VIII - Eastern Visayas
Region IX - Zamboanga Peninsula
Region X - Northern Mindanao
Region XI - Davao
Region XII - SOCCSKSARGEN
Region XIII - Caraga
Autonomous Region in Muslim Mindanao
Employed persons 15 years old and over, Jobs
The survey covered all de jure household members (usual residents) in the sample housing unit.
Producers and sponsors
Name | Affiliation | Role |
---|---|---|
UN Economic and Social Commission for Asia and the Pacific | Questionnaire design, sampling methodology | |
National Statistical Coordination Board | Questionnaire design | |
Bureau of Labor And Employment Statistics | Data analysis | |
Asian Development Bank | Sampling design |
Name | Abbreviation | Role |
---|---|---|
National Statistics Office | NSO | |
UN Economic and Social Commission for Asia and the Pacific | UNESCAP | |
Department of Labor and Employment | DOLE |
Sampling
The sampling design of the Labor Force Survey (LFS) uses the sampling design of the 2003 Master Sample (MS) for Household Surveys that started July 2003.
Sampling Frame
As in most household surveys, the 2003 MS used an area sample design. The Enumeration Area Reference File (EARF) of the 2000 Census of Population and Housing (CPH) was utilized as sampling frame. The EARF contains the number of households by enumeration area (EA) in each barangay. This frame was used to form the primary sampling units (PSUs). With consideration of the period for which the 2003 MS will be in use, the PSUs were formed/defined as a barangay or a combination of barangays with at least 500 households.
Stratification Scheme
Startification involves the division of the entire population into non-overlapping subgroups called starta. Prior to sample selection, the PSUs in each domain were stratified as follows:
1) All large PSUs were treated as separate strata and were referred to as certainty selections (self-representing PSUs). A PSU was considered large if it has a large probability of selection.
2) All other PSUs were then stratified by province, highly urbanized city (HUC) and independent component city (ICC).
3) Within each province/HUC/ICC, the PSUs were further stratified or grouped with respect to some socio-economic variables that were related to poverty incidence. These variables were: (a) the proportion of strongly built houses (PSTRONG); (b) an indication of the proportion of households engaged in agriculture (AGRI); and (c) the per-capita income (PERCAPITA).
Sample Selection
To have some control over the subsample size, the PSUs were selected with probability proportional to some estimated measure of size. The size measure refers to the total number of households from the 2000 CPH. Because of the wide variation in PSU sizes, PSUs with selection probabilities greater than 1 were identified and were included in the sample as certainty selections.
At the second stage, enumeration areas (EAs) were selected within sampled PSUs, and at the third stage, housing units were selected within sampled EAs. Generally, all households in sampled housing units were enumerated, except for few cases when the number of households in a housing unit exceeds three. In which case, a sample of three households in a sampled housing unit was selected at random with equal probability.
An EA is defined as an area with discernable boundaries within barangays, consisting of about 150 contiguous households. These EAs were identified during the 2000 CPH. A housing unit is a structurally separate and independent place of abode which, by the way it has been constructed, converted, or arranged, is intended for habitation by a household
Sample Size
The 2003 Master Sample consist of a sample of 2,835 PSUs of which 330 were certainty PSUs and 2,505 were non certainty PSUs. The number of households for the 2000 CPH was used as measure of size. The entire MS was divided into four sub-samples or independent replicates, such as a quarter sample contains one fourth of the PSUs found in one replicate; a half-sample contains one-half of the PSUs in two replicates.
Strategy for non-response
Replacement of sample households within the sample housing units is allowed only if the listed sample households had moved out of the housing unit. Replacement should be the household currently residing in the sample housing unit previously occupied by the original sample.
Sampling Frame
As in most household surveys, the 2003 MS used an area sample design. The Enumeration Area Reference File (EARF) of the 2000 Census of Population and Housing (CPH) was utilized as sampling frame. The EARF contains the number of households by enumeration area (EA) in each barangay. This frame was used to form the primary sampling units (PSUs). With consideration of the period for which the 2003 MS will be in use, the PSUs were formed/defined as a barangay or a combination of barangays with at least 500 households.
Stratification Scheme
Startification involves the division of the entire population into non-overlapping subgroups called starta. Prior to sample selection, the PSUs in each domain were stratified as follows:
1) All large PSUs were treated as separate strata and were referred to as certainty selections (self-representing PSUs). A PSU was considered large if it has a large probability of selection.
2) All other PSUs were then stratified by province, highly urbanized city (HUC) and independent component city (ICC).
3) Within each province/HUC/ICC, the PSUs were further stratified or grouped with respect to some socio-economic variables that were related to poverty incidence. These variables were: (a) the proportion of strongly built houses (PSTRONG); (b) an indication of the proportion of households engaged in agriculture (AGRI); and (c) the per-capita income (PERCAPITA).
Sample Selection
To have some control over the subsample size, the PSUs were selected with probability proportional to some estimated measure of size. The size measure refers to the total number of households from the 2000 CPH. Because of the wide variation in PSU sizes, PSUs with selection probabilities greater than 1 were identified and were included in the sample as certainty selections.
At the second stage, enumeration areas (EAs) were selected within sampled PSUs, and at the third stage, housing units were selected within sampled EAs. Generally, all households in sampled housing units were enumerated, except for few cases when the number of households in a housing unit exceeds three. In which case, a sample of three households in a sampled housing unit was selected at random with equal probability.
An EA is defined as an area with discernable boundaries within barangays, consisting of about 150 contiguous households. These EAs were identified during the 2000 CPH. A housing unit is a structurally separate and independent place of abode which, by the way it has been constructed, converted, or arranged, is intended for habitation by a household
Sample Size
The 2003 Master Sample consist of a sample of 2,835 PSUs of which 330 were certainty PSUs and 2,505 were non certainty PSUs. The number of households for the 2000 CPH was used as measure of size. The entire MS was divided into four sub-samples or independent replicates, such as a quarter sample contains one fourth of the PSUs found in one replicate; a half-sample contains one-half of the PSUs in two replicates.
Strategy for non-response
Replacement of sample households within the sample housing units is allowed only if the listed sample households had moved out of the housing unit. Replacement should be the household currently residing in the sample housing unit previously occupied by the original sample.
Of the more than 35 thousand employed persons (99.9%) only 7 refused to be interviewed using the Phase I questionnaire.
Calculation of Basic Weights:
Following a standard approach, the weights to be used in analyzing surveys based on the 2003 MS are developed in three stages.
First, base weights are computed to compensate for the unequal selection probabilities in the sample design.
Second, the base weights are adjusted to compensate for unit non-response.
Third , the non-response adjusted weights are further adjusted to make some weighted sample distributions to conform to some known population totals.
Final Survey Weight
The final survey weight assigned to each responding unit is computed as the product of the base weight, the non-response adjustment, and the population weighting adjustment. The final weights should be used in all analyses to produce valid estimates of population parameters.
More detailed explanation on the estimation procedure is provided in the Technical Documents.
Following a standard approach, the weights to be used in analyzing surveys based on the 2003 MS are developed in three stages.
First, base weights are computed to compensate for the unequal selection probabilities in the sample design.
Second, the base weights are adjusted to compensate for unit non-response.
Third , the non-response adjusted weights are further adjusted to make some weighted sample distributions to conform to some known population totals.
Final Survey Weight
The final survey weight assigned to each responding unit is computed as the product of the base weight, the non-response adjustment, and the population weighting adjustment. The final weights should be used in all analyses to produce valid estimates of population parameters.
More detailed explanation on the estimation procedure is provided in the Technical Documents.
Data Collection
Start | End | Cycle |
---|---|---|
2008-08-04 | 2008-04-30 |
Face-to-face [f2f]
The Regional Directors/Officer-In-Charge (RDs/OICs), Provincial Statistics Officers (PSOs), Regional and Provincial Staff were allotted a number of days to supervise the enumeration.
1) The RD/OIC coordinates with the PSOs and provides the general supervision to the staff of the provincial offices under the jurisdiction on all administrative matters and field operations relative to the survey.
2) The PSO supervises the activities of the personnel to ensure that the data collection is finished according to the timetable set.
3) The Regional and Provincial Statistician supervise in the field and ensure that all items in the questionnaire were asked, and review and edit questionnaires while still in their area of assignment and ensure that all sample households have corresponding questionnaire.
Central Office Statisticians were assigned to provinces to supervise and monitor the conduct of the survey.
1) The RD/OIC coordinates with the PSOs and provides the general supervision to the staff of the provincial offices under the jurisdiction on all administrative matters and field operations relative to the survey.
2) The PSO supervises the activities of the personnel to ensure that the data collection is finished according to the timetable set.
3) The Regional and Provincial Statistician supervise in the field and ensure that all items in the questionnaire were asked, and review and edit questionnaires while still in their area of assignment and ensure that all sample households have corresponding questionnaire.
Central Office Statisticians were assigned to provinces to supervise and monitor the conduct of the survey.
ISH FORM 2 (LFS questionnaire) is a four-page, forty four-column questionnaire that is being used in the quarterly rounds of the Labor Force Survey nationwide. This questionnaire gathers data on the demographic and economic characteristics of the population.
On the first page of the questionnaire, the particulars about the geographic location, design codes and household auxiliary information of the sample household that is being interviewed are to be recorded. Certifications by the enumerator and his supervisor regarding the manner by which the data are collected are likewise to be made on this page.
The inside pages of the questionnaire contain the items to be determined about each member of the sample household. Columns 2 to 11 are for the demographic characteristics; columns 2 to 7A are to be ascertained of all members of the household regardless of age. Columns 8 to 9 are asked for members 5 years old and over, while column 10 is asked for members 5 to 24 years old, column 11, for 15 years old and over, while columns 12 to 16 are asked for members 5 years old and over. Items 18 to 44 on the other hand, are the series of items that will be asked of all the members 15 years old and over to determine their labor force and employment characteristics.
Most of the questions have pre-coded responses. The possible answers with their corresponding codes are printed at the bottom of the page for easy reference. Only the appropriate codes need to be entered in the cells.
Other items, however, require write-in entries such as column 14 (primary occupation) and column 16 (kind of business/industry), etc. For such items, it is required that the enumerator describes the primary occupation or kind of business/industry.
The ISH Form 2 is provided as an external resource.
The Informal Sector Survey Form 1 (ISS -List of Employed Persons 15 years old and over)
The ISS Form 1 is a 4-page questionnaire containing 34 columns, asking questions to
identify informal operators, jobs in the informal sectors and informal employment.
On the first page of the questionnaire, the particulars about the geographic location, design codes and lien numbers of employed persons and no. of employed persons. Certifications by the enumerator and his supervisor regarding the manner by which the data are collected are likewise to be made on this page.
The inside pages columns 03 to column 06 ask for the class of worker, kind of occupation and nature of employment, columns for all employed persons. Columns 07 to 13 ask questions on the benefits being received to employed persons whose class of worker are employed in private household (code 0), workers employed in private establishments (1), workers in the government (code 2) and paid family workers in their own family business/ farm (code 5).
Column 14 was asked to all employed persons for job satisfaction. Columns 15 to 28 were asked to all employed persons except those who are working in private households and goverment. Column 29 were asked to all employed persons. Columns 30 to 33 were the criteria used to identify informal sector operator by job.
The ISS Form 1 was in English.
The ISS Form 1 and the ISH Form 2 are provided as an technical document.
On the first page of the questionnaire, the particulars about the geographic location, design codes and household auxiliary information of the sample household that is being interviewed are to be recorded. Certifications by the enumerator and his supervisor regarding the manner by which the data are collected are likewise to be made on this page.
The inside pages of the questionnaire contain the items to be determined about each member of the sample household. Columns 2 to 11 are for the demographic characteristics; columns 2 to 7A are to be ascertained of all members of the household regardless of age. Columns 8 to 9 are asked for members 5 years old and over, while column 10 is asked for members 5 to 24 years old, column 11, for 15 years old and over, while columns 12 to 16 are asked for members 5 years old and over. Items 18 to 44 on the other hand, are the series of items that will be asked of all the members 15 years old and over to determine their labor force and employment characteristics.
Most of the questions have pre-coded responses. The possible answers with their corresponding codes are printed at the bottom of the page for easy reference. Only the appropriate codes need to be entered in the cells.
Other items, however, require write-in entries such as column 14 (primary occupation) and column 16 (kind of business/industry), etc. For such items, it is required that the enumerator describes the primary occupation or kind of business/industry.
The ISH Form 2 is provided as an external resource.
The Informal Sector Survey Form 1 (ISS -List of Employed Persons 15 years old and over)
The ISS Form 1 is a 4-page questionnaire containing 34 columns, asking questions to
identify informal operators, jobs in the informal sectors and informal employment.
On the first page of the questionnaire, the particulars about the geographic location, design codes and lien numbers of employed persons and no. of employed persons. Certifications by the enumerator and his supervisor regarding the manner by which the data are collected are likewise to be made on this page.
The inside pages columns 03 to column 06 ask for the class of worker, kind of occupation and nature of employment, columns for all employed persons. Columns 07 to 13 ask questions on the benefits being received to employed persons whose class of worker are employed in private household (code 0), workers employed in private establishments (1), workers in the government (code 2) and paid family workers in their own family business/ farm (code 5).
Column 14 was asked to all employed persons for job satisfaction. Columns 15 to 28 were asked to all employed persons except those who are working in private households and goverment. Column 29 were asked to all employed persons. Columns 30 to 33 were the criteria used to identify informal sector operator by job.
The ISS Form 1 was in English.
The ISS Form 1 and the ISH Form 2 are provided as an technical document.
Name | Abbreviation | Affiliation |
---|---|---|
National Statistics Office | NSO | National Economic and Development Authority |
Data Processing
Data processing involves two stages: manual processing and machine processing.
Manual processing is done at the provincial offices.
This is the general review of the questionnaires. This process includes the folioing of the questionnaires and completeness of the questionnaires.
Manual Processing and Data encoding of the questionnaires done at the regional offices.
The consistency checking of the responses, editing and coding of responses were done. Data encoding were done at the regional office after the consistency and completeness checking.
Manual processing document provided as an external source.
Manual processing is done at the provincial offices.
This is the general review of the questionnaires. This process includes the folioing of the questionnaires and completeness of the questionnaires.
Manual Processing and Data encoding of the questionnaires done at the regional offices.
The consistency checking of the responses, editing and coding of responses were done. Data encoding were done at the regional office after the consistency and completeness checking.
Manual processing document provided as an external source.
Data access
Name | Affiliation | URI | |
---|---|---|---|
National Statistics Office | National Economic and Development Authority | iesdstaf@census.gov.ph | www.census.gov.ph |
Authorization to use this data is granted only to the client or data user and persons within its organization, if applicable. Under no circumstances shall the client reproduce, distribute, sell or lend the entire data or parts thereof to any other data user apart from himself or that of authorized employees in his organization. The NSO shall hold the data user fully responsible for safeguarding the data from any unauthorized access or use.
Before being granted access to the dataset, all users have to formally agree:
1. To make no copies of any files or portions of files to which s/he is granted access except those authorized by the data depositor.
2. Not to use any technique in an attempt to learn the identity of any person, establishment, or sampling unit not identified on public use data files.
3. To hold in strictest confidence the identification of any establishment or individual that may be inadvertently revealed in any documents or discussion, or analysis. Such inadvertent identification revealed in her/his analysis will be immediately brought to the attention of the data depositor.
Before being granted access to the dataset, all users have to formally agree:
1. To make no copies of any files or portions of files to which s/he is granted access except those authorized by the data depositor.
2. Not to use any technique in an attempt to learn the identity of any person, establishment, or sampling unit not identified on public use data files.
3. To hold in strictest confidence the identification of any establishment or individual that may be inadvertently revealed in any documents or discussion, or analysis. Such inadvertent identification revealed in her/his analysis will be immediately brought to the attention of the data depositor.
Any report, paper or similar articles, whether published or not, emanating from the use of this data shall give appropriate acknowledgement as suggested herein, "(Title of Census/Survey, version number and date), National Statistics Office, Manila, Philippines", as the source of basic data. The data user or client is encouraged to provide NSO with a copy of such report, paper or article. It is understood that unless expressly allowed by the client, such report, paper or article shall not be used for any purpose other than monitoring.
Disclaimer and copyrights
The NSO gives no warranty that the data are free from errors. Hence, the NSO shall not be held responsible for any loss or damage as a result of the client's manipulation or tabulation of the data
The data user acknowledges that any available intellectual property rights, including copyright in the data are owned by the Philippines National Statistics Office.
contacts
Name | Affiliation | URI | |
---|---|---|---|
Income and Employment Statistics Division | NSO | iesdstaf@census.gov.ph | www.census.gov.ph |