Leviticus 19:9-10 (NIV)
When you reap the harvest of your land, do not reap to the very edges of your field or gather the gleanings of your harvest. Do not go over your vineyard a second time or pick up the grapes that have fallen. Leave them for the poor and the foreigner.
I like the Old Testament approach to welfare. Planned generosity. No tax-collecting middle man. A relationship between the haves and the have-nots.