The 2009 Children’s Activities Survey (CAS) was the first CAS survey conducted in Republic of Moldova by National Bureau of Statistics in collaboration with IPEC and UNICEF. The survey covered 11,526 households containing 34,157 individuals, 6,784 of whom were children between the ages of 5-17 years.
The Children’s Activities Survey (CAS) was conducted by the National Bureau of Statistics of Moldova in October-December 2009 as a module of the nationwide Labour Force Survey (LFS) that has been implemented in Moldova on a quarterly basis since 1998. The CAS provides reliable estimates on the activities of children aged 5-17 (inclusive) for the nation as a whole; for the four statistical regions of Moldova (North, Centre, South, Chisinau Municipality); by geographical area (urban/rural); and by sex (male/female).
The survey aimed to provide an understanding of the prevalence of employment among children and child labour, the main characteristics of working children, and the potential consequences of employment as measured by school and health outcomes.
Kind of Data
Sample survey data [ssd]
Unit of Analysis
- Children aged 5-17
The 2009 Children’s Activities Survey covered the following topics:
- Household composition
- Household conditions
- Educational attainment
- Economic activity
- Unpaid household services
- Health and safety issues
Producers and sponsors
National Bureau of Statistics (NBS)
Government of Republic of Moldova
International Programme on the Elimination of Child Labour
Government of Republic of Moldova
Funded the study
United Nations Children’s Fund in Moldova
Contributed financially to enhancing NBS capacity in child labour data collection and printing of the results
The CAS was conducted as a module of a larger, regularly conducted Labour Force Survey (LFS), which is the main survey instrument used to collect labour market data in Moldova. The sample size was chosen so as to allow for representative estimates of key child-labour indicators for the country at large as well as for urban and rural areas and for the four statistical regions of the country, namely, North, Centre, South and Chisinau Municipality, which includes the capital city.
The LFS employs a complex, two-stage sample design based on probabilistic sampling. In Stage I, all primary sampling units (PSU) from the Multi-dimensional Sample for Social Research (EMDOS) master sample were included, with the PSUs in the EMDOS selected using probability-proportional-to-size (PPS) sampling. Population Census lists (2004) combined with the lists of electricity consumers (2007) were also used as the sampling frame. In Stage II, households were initially selected using simple random sampling (SRS); from these, households identified as having children aged 5-17 – the target population – were selected for interviewing in the CAS. The sampling frame for Stage II was comprised of the LFS sample for the first, second and fourth quarter.
The CAS survey was conducted as an ad-hoc survey using the LFS sample for the first, second and the fourth quarter of 2009. The LFS sample comprises 12,000 households in 150 Primary Sampling Units (PSUs). Due to the rotational structure of the LFS, some households included in the LFS are interviewed in more than one consecutive month/quarter. Consequently, the total sample size for the CAS would be 36,000 households (LFS: Q1+Q2+Q4), if it were to include the multiple appearances of each household in the rotation scheme. However, in calculating the CAS sample size, individual households were counted only once. Thus, the CAS sample size consisted of 18,400 households, comprised of 23 rotational groups (sub-samples) of 800 households each, and was estimated to include 5,054 households with at least one child aged 5-17 years. This sample was obtained by combining a sub-sample of 3,534 households that had been sampled in the LFS for the first and second quarters of 2009 (Rotational Groups a-g and j-s) with a sub-sample of 1,520 households that were not included in the LFS until after the second quarter of 2009 (Rotational Groups t-y). Estimated numbers of children aged 5-17 expected to be interviewed included 2,194 in the first sub-sample and 5,246 in the second sub-sample, for a total estimate of 7,440 children.
Data weighting is an efficient procedure used to obtain unbiased estimates of population parameters. The weighting procedure involves assigning extension coefficients (‘weights’) to each respondent in the sample to show how many individuals from the general population are represented by any given respondent. This requires an initial determination of basic weights, adjusting these weights in line with response rates, and calibrating the adjusted weights using auxiliary information in order to improve the quality of the final estimates.
For those households in the CAS sample that had not participated in the LFS until the 4th quarter of 2009, basic weights were computed, whereas for households in the CAS sample that had already participated in the LFS in 2009, the final weights assigned at the time they last participated in the LFS were taken as the basic weights for the CAS.
Further details on weight calculations are given in Appendix D of the final report.
Dates of Data Collection
Data Collection Mode
National Bureau of Statistics
Government of Republic of Moldova
The CAS questionnaire was developed based on the ILO/SIMPOC model Child Labour Survey questionnaire and was appended as a module to the LFS, which is conducted quarterly and is addressed to individuals 15 years of age and over. Like most labour force surveys, it collects information on basic demographics, employment outcomes and inactivity. Since 2006, the LFS has also collected information on labour market earnings of adults; however, this information is not publicly released.
The CAS consists of 43 questions distributed over four main sections, namely: Educational Attainment; Economic Activity; Unpaid Household Services; and Health and Safety Issues. Although the questionnaire is addressed to children aged 5-17, in 36.3 percent of cases (n=2,454 children), another household member answered the questionnaire on the child’s behalf. The proportion of children answering the questionnaire themselves increased with age up until age 14 (76.6%), but decreased thereafter up until age 17 (62%).
After weighting for non-response, data was calibrated in order to adjust the marginal distribution of variables (sex, age urban/rural, region) within the sample to that of the actual population (according to the current demographic statistics as of 1 January 2009). Calibration was performed until population estimates for each variable were adjusted to within 1.0 percent of the actual reported population.
Further details on data calibration process is given in Appendix D of the final report.
Use of the dataset must be acknowledged using a citation which would include:
- the Identification of the Primary Investigator
- the title of the survey (including country, acronym and year of implementation)
- the survey reference number
- the source and date of download
Disclaimer and copyrights
The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses.