Japan's social security system has a problem. Self-employed workers, especially young people, just aren't paying into because they don't think they'll get their money back. Contributions are 37% below where the government says they should be. The government has started a campaign to encourage people to pay, but it has run into a few snags. Three cabinet ministers have been found to be behind in payments. In fact, Trade Minister Shoichi Nakagawa has admitted he hasn't paid into the system for 21 years.