Employee stock options should be

		call options because a call option goes up in value when the underlying stock price goes down.
		combinations of call and put options because the combination will make money no matter which way the underlying stock price goes.
		put options because a put option goes up in value when the underlying stock price goes up.
		put options because a put option goes up in value when the underlying stock value goes down.
		call options because a call option goes up in value when the underlying stock price goes up.