Wasn’t there another study saying that attrition at places with mandatory work from home was higher than forecast, and hiring replacements for in-office is also

Wasn’t there another study saying that attrition at places with mandatory work from home was higher than forecast, and hiring replacements for in-office is also much more difficult than these companies projected? A self-imposed labor shortage (compounded by layoffs) could explain the current productivity boost. After all, you can simultaneously lower production and worker count, but still increase their ratio.