After u get killed but u don't die instantly and u can be revived
And when I say sleepers I mean when u disconnect ur character stays in the game and u don't dc in the middle of the fight or stash ur loot in ur inv when u log off for the night everything that's in the game stays in the game and when u get raided we find who was the owner of the base so yah it will reduce the amount of people's dc in middle of fights when they low hp.