Public Use Microdata Sample Files Technical Documentation Note 4 The value of 9 for the variable CLWRKR in the person record of the Data Dictionary (Chapter 6) for the 1-percent files was missing. It has been corrected as shown below. CLWKR Class of Worker 0. Not in universe (Under 16 years of LASTWRK = 2) 1. Employee of private for-profit company 2. Employee of private not-for-profit company 3. Employee of local government 4. Employee of state government 5. Employee of federal government 6. Self-employed in unincorporated business or company 7. Self-employed in incorporated business or company 8. Unpaid family worker 9. Unemployed, no work experience in the last 5 years May 2003