People who practice overemployment delude themselves that multiple jobs doesn’t affect their performance and therefore there’s nothing wrong with working multiple jobs. Their subreddit is a dumbfounding echo chamber.

I had an “over-employed” person on my team (who lied about it) and I can confirm what all others are saying about this guy: they start going AWOL, miss important discussions, miss deadlines, blame their colleagues (creating toxic culture), start doing shoddy work because they’re not thinking deeply through problems and also to keep expectations low, create busywork for others to take the pressure off themselves, use company resources and accounts for other projects (creating security issues, among others)… just to name a few reasons.

It’s not about possessiveness. Many co’s are glad to hire contractors, who don’t “belong” to them.

It’s called team building. You can believe in it or not. You can join a company that values that, or not.

I worked with a guy who wasn't even "over employed" but was working on some big side project at home.

He would blow off any meeting before noon. Just wouldn't show up.

His work was usually late and rushed/poor quality. Lots of corners cut. Oftentimes he didn't even get something right the first time because he didn't have the full context because he missed discussion that happened in the meetings he didn't show up to.

He was full of shit. Every day he was having some personal tragedy. Excuse after excuse.

He started trouble with teammates in a way I've just never seen before.

He was just all around a net negative even though he occasionally did decent work. Everyone was happy to see him go.