I don't believe work/life balance is the key balance to look track. I think work should be minimized as much as possible and then after that is accomplished, a focus should be given to living the best life possible.
And to live that best possible life you have to balance action and rest (either actual sleep, or even slow, unstrained meditative thinking). Now, that action can be what we call productive work, and actually so can that kind of thinking. But it really doesn't have to be.
Also, balancing works in rhythms and cycles, so that certain times of day are better than others. And really, again, this is about enjoyment. This is a completely side conversation as to whether someone wants their entire life co-opted by their employer (which just seems bad to me).
Physical
Action -- chores, strength training
Rest -- qigong/tai chi, napping
Gardening
Action -- digging, pruning, moving heavy debris, mowing
Rest -- planting seeds, gentle weeding in a loose bed, strolling about on a nice day, snacking by whim
Mental
Action -- e-mails, lesson planing, writing a quick blog post, working on a skill for a goal nerd goal
Rest -- thinking in silence, writing in cursive in a notebook, reading a good book slowly and pausing to think
Games to Play with Others
Action -- Backgammon, Yahtzee, Poker
Rest -- Go with the right handicap
Solitare games
Action --, Russian Backgammon Solitaire, Open Face Chinese Poker Solitare (though I often play it when I can't sleep, so maybe it is in between "action" and "rest").
Rest -- Working through Go Joseki
