In your wallet or somewhere at home, do you have a blue or pink card showing that you are enrolled in one of Japan's national health and pension programs? If not, and if you are thinking of extending your stay here, you may want to think about a recent revision to visa requirements for foreign residents. The changes, which the Justice Ministry says were made in order to "smooth out the administrative process," may have major consequences for foreign residents and their future in Japan.

On a drab, rainy Sunday in June, a group of foreign workers gathered at the office of the National Union of General Workers Tokyo Nambu in Shimbashi to discuss an equally drab topic: social insurance. According to a new Immigration Bureau guideline passed by the Diet earlier this month, foreign residents will be required to show proof of enrollment in Japan's health insurance program in order to renew or apply for a visa after April 1, 2010.

Surrounded by giant protest signs, leaflets and a Che Guevara poster, a quiet anxiety hung in the room as participants listened to the seminar. A handful of attendees were young, but most were middle-aged or approaching retirement age. Many had been working in Japan for years and had never been told anything about insurance, while others were aware of the program but had been dissuaded by their employers from joining it.