Why should someone quit a full-time job to go work for you if there's a 30% chance of being unemployed 2 months later? Even if it's a 30% raise, it isn't worth

Why should someone quit a full-time job to go work for you if there's a 30% chance of being unemployed 2 months later? Even if it's a 30% raise, it isn't worth it if there's also a 30% chance of being stuck.