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Survey of Labour and Income Dynamics: A Survey Overview On line catalogue About the survey Survey content Notes and definitions Methodology Data products data services Publications More information Related links .

About the survey

Survey objectives
What's new?
Survey design
Household relationships
SLID: a longitudinal survey
Computer-assisted telephone interviewing

Survey objectives

The Survey of Labour and Income Dynamics (SLID) is an important source for income data for Canadian families, households and individuals. Introduced in 1993, SLID provides an added dimension to traditional surveys on labour market activity and income: the changes experienced by individuals and families through time. At the heart of the survey's objectives is the understanding of the economic well-being of Canadians.

Starting with reference year 1996, the Survey of Labour and Income Dynamics (SLID) officially replaced the annual Survey of Consumer Finances (SCF). Though the income content of the two surveys is similar, SLID adds a large selection of variables that capture transitions in Canadian jobs, income and family events.

SLID, as a longitudinal survey, interviews the same people from one year to the next for a period of six years. The survey's longitudinal dimension allows evaluation of concurrent and often related events, which yields greater insight on the nature and extent of poverty in Canada: What socio-economic shifts do individuals and families live through?  How do these shifts vary with changes in their paid work, family make-up, receipt of government transfers and other factors? What proportion of households are persistently poor year after year, and what makes it possible for others to emerge from periods of low income?

SLID also provides information on a broad selection of human capital variables, labour force experiences and demographic characteristics such as education, family relationships and household composition. Its breadth of content combined with a relatively large sample makes it a unique and valuable data set.

What's new?

2003 Historical revision

Every few years, estimates produced by the combined program of the Survey of Labour and Income Dynamics (SLID) and the Survey of Consumer Finances (SCF) undergo a revision. This year's revision is the result of three modifications.

  • All estimates, back to 1990, are adjusted to population projections based on the 2001 Census population counts.
  • Starting with 1990 estimates, wages and salaries are benchmarked to the distribution of wages and salaries derived from the T4 statement of remuneration remittance file.
  • The 1992-base low income cut-offs (LICOs) themselves have been revised, resulting from a revision of the 1992 Family Expenditure Survey. SLID and SCF estimates were revised from 1980. Along with the two changes described above, this has an impact on levels of low-income statistics.

For more details, see 2003 historical revision


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Date modified: 2005-05-12 Important Notices