Labor Day weekend provides us an annual three-day break before summer fades into fall. School and football are back, and though it’s still plenty hot, the days are growing shorter and the leaves are crisping up for seasonal changes to come. The holiday also is when we review the state of work in our society, both to celebrate the jobs we have and, in some cases, lament those that have passed into frozen oblivion from their own autumnal equinox.