But beyond that, I'd add Bertrand Russell's In Praise of Idleness and Emmanuel Le Roy Ladurie's Montaillou: Cathars and Catholics in a French Village 1294-1324.

While all of them are tremendous food for thought, the third was the most stunning for me: it is remarkable to see the degree to which a medieval peasant, while having less access to technology than we do today, enjoyed in many ways a better lifestyle than we do in terms of holidays, working hours that meshed with actual human rythyms. As Russell spells out, the industrial revolution, which provided many material advancement, could have done so with a great improvement in everyone's lifestyle, but instead most of its benefits have been captured upwards.