I work in automation. We've had a few customers who wanted to keep employing people from their local area; trying to help the community and all that. Each of these customers had gotten back to us after some time because 'F these people. They act like they don't want to work and are a pain in the ass'. Long story short, we automated their jobs and they were given their final paycheck.

I can only assume these people who are double dipping are doing the bare minimum for each job, otherwise how can they do two jobs in the same time period. I wouldn't be surprised if one day their employers get tired of their antics and removed their jobs.