Why doesn't my script work when the other one does if statement?

So pretty much I have lots more code but it is this part that doesn't work

if humanoid.Health <= 0 then
				print("why")
				local function work(player)
					game.ReplicatedStorage.GiveFear:FireServer()
					print("noob")
					print(humanoid)
					print(humanoid.Health)
				end
				print("work")
				work()
			end

However, it does work when you do this

if humanoid.Health >= 0 then
				print("why")
				local function work(player)
					game.ReplicatedStorage.GiveFear:FireServer()
					print("noob")
					print(humanoid)
					print(humanoid.Health)
				end
				print("work")
				work()
			end

Can someone please explain why and how to fix this.