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Day Labor study 2006.pdf - National Council for Occupational Safety ...

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Size of Site Frequency %Small Site ( 25) 129 49Medium Site (26-50) 86 33Large Site (51-100) 39 15Mega Site (100+) 6 2Other Identified 5 4 2Total 264 101Source: <strong>National</strong> <strong>Day</strong> <strong>Labor</strong> Survey, 2004.Sampling FrameworkThe <strong>National</strong> <strong>Day</strong> <strong>Labor</strong> Survey adapted conventional survey samplingtechniques, and supports statistical generalizations regarding:<strong>Day</strong> laborers found at the 264 sites in 36 sampled MSAs and throughout theUnited States on a typical day.<strong>Day</strong> laborers found at all sites in the 36 sampled MSAs and throughout theUnited States on a typical day.Persons in the 36 sampled MSAs and in the United States who seek work asday laborers.Using in<strong>for</strong>mation (i.e., field notes, counts of day laborers) from our siteidentification research carried out during November 2003-March 2004 and the scoutingexercise in May 2004, we were able to establish “selection” counts <strong>for</strong> each site.Selection counts (a predetermined set of numbers) were based on the size (total numberof day laborers) of the hiring sites prior to the survey conducted in July and August of2004. Upon arrival at a given site a total count of all workers was taken at 6:30 in themorning. The count was repeated every hour until 10:30 a.m. and included day laborersthat arrived after the initial count had been made. After all the workers had been countedthe selection count was administered and potential survey participants were identified.Each worker who fell within the selection count (a random number) was approached andasked to participate in the survey.To determine which areas we would survey at, a total of 48 MSAs were randomlyselected <strong>for</strong> our sample. The variables used to determine the selection <strong>for</strong> our samplewere: (1) Size of total population, and (2) size of Latino population. MSAs were dividedinto four strata:Stratum 1 = small total population (

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