Answer: It is based on company payroll and not on unverifiable answers.
Drawback- It does not include information about self-employed people.
Step-by-step explanation:
The Bureau of Labor Statistics carries out two surveys monthly, the payroll survey, also known as the current employment survey and the household survey or the current population survey.
The current employment survey involves about 142,000 business and provides information about wages and other employment details in the non-farm sector. It does not include information about self-employed people.
The current population survey addresses this issue. In this survey involving sixty thousand households, employees of the bureau of Labor Statistics ask questions to find out how many members of each household are in the labor force, how many are employed and how many are unemployed.
This measures the number of agricultural workers and self employed workers.