Happiest job is…

Construction 

https://www.cnbc.com/2023/09/29/this-is-the-happiest-job-in-the-world-according-to-new-research.html

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traditionally, dentistry & tech support.

or so I've heard.

I'm sure artisanal cobalt mines are actually profoundly unhappier than most jobs, but there's no way to sample sentiment, the method may have unaccounted bias, and "more sunlight" is debatably stated/revealed preference. 

ngl, we just do the best with what we have.

That's crazy that a dentist would be unhappier than someone working in a diamond mine or a slaughterhouse. I'm guessing there are a lot of jobs that aren't included in the dataset.