In the old days people would have a hard time stretching their monthly welfare/food stamp benefits over the whole month. These days "food stamps" are no longer stamps, or even paper; they're bits on a debit card. I assume it would be as easy and cost no more to issue food stamps weekly instead of monthly
There's research showing that people whose money comes in weekly spend more wisely than when the same amount arrives monthly. So why don't we change the payment issuance schedule to weekly?