Construction Union Wage Rate Index
The Construction Union Wage Rate Index measures monthly changes over time in the collective agreement hourly rates, where they exist, for 16 trades engaged in building construction in 22 metropolitan areas.
Detailed information for March 2015
Data release - April 23, 2015
The Construction Union Wage Rate Index measures monthly changes over time in the collective agreement hourly rates, where they exist, for 16 trades engaged in building construction in 22 metropolitan areas. These series can be employed in several ways, including keeping users abreast of pay scale changes within the unionized construction work force, identifying differences between trades and between regions, incorporating them into the escalation clauses of construction contracts and time series analysis.
- Construction price indexes
- Prices and price indexes
- Unionization and industrial relations
- Wages, salaries and other earnings
Data sources and methodology
The universe consists of all construction unions for all trades across Canada.
This is a sample survey with a longitudinal design.
While there exist many constructions trade categories, only 16 trades are actually tracked over time. These 16 trade groups are chosen on the basis of their high importance to the construction industry. For each trade group, a census is taken, as one trade group in a province is represented by one union.
Responding to this survey is mandatory.
Data are collected from other Statistics Canada surveys and/or other sources.
There is no questionnaire for the Construction Union Wage Rate Index. The data are obtained from the wage rates and supplements information contained in the collective agreements that have been signed and are in place in the various jurisdictions. Collection for the Construction Union Wage Rate Index consists of telephone contacts and consulting the web sites of various construction labour relations associations for each province. Summaries of the signed agreements for the relevant trades are provided to Statistics Canada.
The data are verified by the survey analyst and any inconsistencies are clarified with the respondent.
During periods where agreements are under negotiation and current contracts have expired, the last prevailing rates are carried forward until a new agreement is in place.
The weights used are based on the product of the number of workers employed in each trade and in each metropolitan area, as derived from 2006 Census data, and the 2007 average of the hourly rates of each trade in each metropolitan area. A fixed-basket Laspeyres index formula is used in the calculation of the indexes.
Two rates are indexed: basic rates, indicating the straight time hourly compensation; and basic rates including supplements, such as vacation pay, statutory holiday pay, pension contribution, and employers' contribution to private plans, health and welfare plans, industry promotion and training funds. Wage rates used for these indexes are derived mainly from those published in the various collective agreements.
Statistics Canada is prohibited by law from releasing any information it collects which could identify any person, business, or organization, unless consent has been given by the respondent or as permitted by the Statistics Act. Various confidentiality rules are applied to all data that are released or published to prevent the publication or disclosure of any information deemed confidential. If necessary, data are suppressed to prevent direct or residual disclosure of identifiable data.
Collected data will be converted to price indexes and data will be released as such, so that it will not be possible to identify the suppliers of the original raw data used to derive information on prices.
Revisions and seasonal adjustment
Given the length of time that can transpire between the expiration of a contract and the ratification of a new agreement, the revision period for the wage rates and indexes is 30 months.
The weight information was derived from the Statistics Canada 2006 Census, while the rate information is obtained from administrative data. Both sources of input are subject to their own errors.
Due to survey methodology of the Construction Union Wage Rate Index, confidence intervals are not currently estimated. Indexes for higher and lower levels of aggregation are considered to be statistically reliable.
- Data quality, concepts and methodology: Construction union wage rates and indexes
- Table 1 - Concordance of numbers for selected index series
- Date modified: