You are right - the missing years workwise are 79-91, they moved into CH house in ' 83, Kids born 81/86/89 , separated in 91when youngest was 2 years old. Perhaps he was at home in those years looking after the kids doing part time jobs. I know that sounds unlikely. The separation happened around the time his final job started.
This is pure speculation on my part, but I am starting to really think that after he was fired from the police department in 1979 he may have primarily become a stay-at-home husband, and in 1981, his first child was born.
His shoplifting conviction and termination from the police department was in 1979. His education and work experience was LE and with his conviction and subsequent termination, another position in LE would likely not have been an option. I think many employers would have been less than enthusiastic about a job candidate with a recent shoplifting conviction and termination as well.
He is tied to the Maggiore murders in March 1978, and after that, there were numerous attacks/rapes, but right after he was terminated from the police department is when it appears he began the series of serial murders.
JDD's first child was born in 1981 and there was no apparent criminal activity from 1981 to 1986, when the murder in Irvine occurred. He and his wife separate in 1991 and he gets a job at the warehouse.
I really am questioning whether he was employed from 1979 to 1991. I hope we find out.
JMO