You should look into the work of Nick Bloom, an Economics prof at Standford (active on various social media platforms) who has been researching remote work for

You should look into the work of Nick Bloom, an Economics prof at Standford (active on various social media platforms) who has been researching remote work for quite a while: https://economics.stanford.edu/people/nicholas-bloom https://economics.stanford.edu/people/nicholas-bloom While I can't recall a study on your precise question about morale, he did share a lot of findings strongly supporting hybrid and remote work, including lower attrition.