The WHYLEFT variable is available from 1976 to 1993 in IPUMS CPS.
The Basic Monthly CPS Files (available here, for example) contain the variable PEJHRSN “What is the main reason you left your last job?”. This variable is available for years after 1994 to present.
Is seems that the variable PEJHRSN could be used to extend the variable WHYLEFT provided by IPUMS CPS. Is this correct? Could you please indicate why the IPUMS CPS variable WHYLEFT stops in 1993?