Even for Social Security old age benefits, the overhead is a lot more than just checking someone's age. Benefits depend upon how much income someone had during

Even for Social Security old age benefits, the overhead is a lot more than just checking someone's age. Benefits depend upon how much income someone had during his working years. So those records have to be checked. You also have to make sure people don't get fraudulent benefits. And that's just for old age benefits. For Social Security disability, you have to make sure someone is disabled. For unemployment, you have to make sure they worked in the first place, that they lost their job in a manner that garners them benefits, and their benefit size depends on what their pay was. Making all this work takes bureaucrats, judges to adjudicate claims, and people to investigate fraud. I have no idea whether UBI would be dramatically more efficient but even something like Social Security is far more complex than just checking someone's age.