Unintended? My company did two rounds of layoffs already and this was a thing that was known from day 1. Literally the day after the the first rounds one of the questions in the town hall was about "how do we plan to retain the people who are left now that they're getting spammed by linkedin recruiters".
I think these days this is a known and intentional effect from upper management and they absolutely are accounting for another 5-10% of voluntary leavers post layoffs. Its free money from their POV, no severance.
To clarify a bit here, "unintended" meaning the amount of people, not that people left at all. They had to start incentivizing people to stay, they talked about attrition frequently, etc.
I think these days this is a known and intentional effect from upper management and they absolutely are accounting for another 5-10% of voluntary leavers post layoffs. Its free money from their POV, no severance.