Some suggestions for improving the Lahor Resource Survey Method
The Labor Resource Survey have been conduct for 37 years by different agencies, Labor Force Survey, Statistics Research and Development Group begun to conduct this survey in 1963, several agencies succeeded it till DGBAS took over the survey in 1978. The result of survey has been the primary source of information on labor market ever since. Although the survey have ever been improved in sampling techniques over last two decade, but the Nation's society and economy underwent many changes and current sampling method still existed some problems, so survey design need to be reviewed again and make the data derived from the survey become more sensitive to the labor market varies.
This article discusses current sampling technologies and the contents of survey, several issues of survey design were proved to affect the quality of the data. The article also introduces the solution of those issues base on basic theories and what many countries have done before. The conclusions we have as follows:
•A change in single characteristic should not justify removing a PSU from a stratum to another, a change in several population characteristics is required before a PSU is removed instead, some rules for the restratification should be established to improve reliability of estimates.
•Assigning sample sizes to the sample of sub-population with equal allocation will extremely contribute to decrease of variances for those small sizes of sub-populations. The number of allocated sample also can be readjusted depending on homogeneity of characteristics within each sub-population.
•Selection of sample PSU is referred to as sampling with probability proportional to size, the number of sample households in PSU can be limited within workload of an interviewer, the estimates will be unbiased and estimated variance will be smaller than that from sampling with equal probabilities.
•Improving monthly data collection of discouraged worker outside the labor force and under-employment in the labor force will help establishment of index for hidden unemployment.
•Employed persons are asked whether they have more than one job and how many jobs they have, it may help to reconcile employment estimates from the Labor Resource Survey with those from the Employees' Earnings Survey.