 Other businesses have proffered signing bonuses, free dinner coupons, and other lures, while such notoriously mingy outfits as McDonald's and Walmart have even upped their wage scale in an effort to draw workers. Yet, no go. In fact, to the astonishment of the economic elite, the employment flow this year is going the other way. Record numbers of current workers in all sorts of jobs in every section of the country are voluntarily walking away.