The company could put their money where their mouth is. Are you truly being honest about keeping them on? Write up a contract that guarantees them X years of e

The company could put their money where their mouth is. Are you truly being honest about keeping them on? Write up a contract that guarantees them X years of employment, at Y severance per month if terminated early. More realistically, you should consider that the ones resigning have a better read on the situation than you do.