Weeks Worked in 1950

Hello,

Can you confirm whether there is a porblem with the variable weeks worked (WKSWORK1) in 1950?
It looks like it is equal to 0 most of the times, even for employed people (while this is not the case in 1940 for example). However, I have found papers that rely on this variable in 1950 (such as this paper - Table 1: https://www.ddorn.net/papers/Autor-Dorn-LowSkillServices-Polarization.pdf)

Can you please let me know whether you are aware of the same problem?

Thanks,
Maddalena

I just answered your question at this post: Weeks worked (WKSWORK1) in 1950