While I have not read "Japan at War: An Oral History," I would highly recommend anything by Studs Terkel. He has oral histories on the Great Depression, World War 2 (pretty sure this is his best-known work), and, while these may not be considered histories in the strict sense, books on working, the American Dream, and a few others. If I think of some others, I will respond further. But Terkel is, in my opinion, a great place to start if you're interested in the "Everyman" approach to historical accounts.

Patriots; The Vietnam War Remembered From All Sides by Christian Appy is an excellent compilation of oral histories of the war. Interviews include soldiers, war protestors, CIA agents, journalists, and politicians from the American and Vietnamese sides and really cast a wide net on the interpretation if the war. I highly suggest it if you're interested in the war.

Voices from Chenobyl by Svetlana Alexievich is a great work on memories and narrativizing disasters and how people assigned culpability. Also one of those oral histories that reading feels in itself an act of defiance against the institutions that would prefer you to forget this particular chapter in history.

I second the rec of Working by Studs Terkel. Really goes to show that no matter what type of job people had, pink-collar or blue-collar or otherwise, everyone felt controlled and tired (but occasionally optimistic).