I’m teaching four and 1/2 hours in a row at a local high school and have assistant teachers who assist, two hours each at a time. It occurred to me that perhaps teaching four hours in a row is illegal under Japanese union rules. I don’t mind it - I love my students, and my fellow teachers are very helpful, and I wouldn’t change it anyway - once one gets the ball rolling, it’s best not to halt it. But just out of curiosity, does anyone have any info about the legality of the situation? - William