It is very famous that trains in Japan run very punctually. Japanese rail road companies, However, have another wonderful service, which is issuing certificates of lateness.
Please look at this picture of paper. It says "This paper proves that the train was delayed." When the train you always get on is delayed for some reasons, you can get this paper at ticket gates. It means, even though you are late for offices due to trains, you can prove it to your bosses with the certificates to. Actually these days, it seems that you can receive the certificates even through website.
I think this service was developed because almost all of Japanese companies are really strict to their employees.