I recently downloaded a sample that included Census samples from Greece, Spain, Italy, Ireland, and France, as well as the available Labor Force Surveys from Spain and Italy.
Tabbing the variables classwk and classwkd reveals the following: there seem to be many observations with classwk values between 5 and 8, and many observations with classwkd values between 400 and 998. These values do not show up in the codes of these variables in the IPUMS page. At the same time, the variable occ takes very few values between 10 and 47, while the variable takes three or four digit values for many of these countries.
I suspect there is a bug in the code that compiles the data. Maybe this happens when one downloads census and lfs data at the same time. Do you have any ideas for what’s happening?