During the past few years, the Japanese government has established rules aimed at reducing the nation's emissions of carbon dioxide (CO2) by nearly 3 million tons each summer. To attain this goal, Japan's government has effectively declared war on air conditioning. The government has mandated that thermostats in all government offices be set no lower than 82 degrees during the months spanning June to September. Private Japanese businesses have followed suit with a "Cool Biz" program establishing 82 degrees as the "new office norm" for indoor temperatures. Of course, 82 degrees is above the temperature at which people in enclosed spaces are most effective at producing goods and services. Consequently, the productive contribution of Japanese labor now declines every summer. What do you suppose happened to the productive contribution of labor when Japan's government temporarily raised the summer target office temperature to 86 degrees?