I have downloaded the January Job Tenure and Occupational Mobility Supplement data. The vast majority of the entries list 0 as the occupation for the previous year (“jtocc” field), coded as “NIU” in the “jtocc1990” field. In the “jtresp” field however, most of these are coded as “Eligible, interviewed”.
As an idea of the magnitude, in the 2014 data out of 131,554 observations, 128,677 list the occupation in the “jtocc” field as 0, even though 49,593 of these were listed as “Eligible, interviewed”.
Do you know why this is the case - that there are so few data entries for previous year’ occupation, even though these people seem to have been interviewed?
Thank you so much!