YOU SAID:
He works for poor people around the world.
INTO JAPANESE
彼は、世界中の貧しい人々のために働きます。
BACK INTO ENGLISH
He will work for poor people around the world.
INTO JAPANESE
彼は、世界中の貧しい人々のために動作します。
BACK INTO ENGLISH
He will work for poor people around the world.
That didn't even make that much sense in English.