THE GREAT RISK SHIFT: WAL-MART EDITION. Wal-Mart is moving towards widespread implementation of new employee scheduling software. Sounds innocent enough -- the software tracks customer habits over seven week periods, and reschedules workers for each one. Moreover, it also creates a range of daily possibilities, allowing Wal-Mart to schedule workers to be on-call during surges, or send them home during lulls, or implement a variety of other strategies to create a more flexible, adaptive, workforce. All sounds routine enough, right? But pity the workforce. The new software will make advance scheduling and reliable paychecks a thing of the past. According to The Journal, "experts say [the program] can saddle workers with unpredictable schedules. In some cases, they may be asked to be "on call" to meet customer surges, or sent home because of a lull, resulting in less pay. The new systems also alert managers when a worker is approaching full-time status or overtime, which would require higher wages and benefits, so they can scale back that person's schedule...That means workers may not know when or if they will need a babysitter or whether they will work enough hours to pay that month's bills. Rather than work three eight-hour days, someone might now be plugged into six four-hour days, mornings one week and evenings the next." Brave new world. And one that can be used to push out older, more experienced, better-paid workers. "Some longtime workers," the Journal reports, "also say they believe managers use the system to pressure them to quit. After working 16 years at a Wal-Mart in Hastings, Minn., Karen Nelson says managers told her she had to be open to working nights and weekends. After she refused, her hours were trimmed, though they have been restored in recent months. 'The store manager said he could get two people for what he pays me,' says Ms. Nelson, who earns about $14.50 an hour." Take a highly-paid veteran and begin shaking up their shifts, demanding nights and weekends, and scheduling erratically, and soon you'll have a former highly-paid veteran. This isn't, it should be said, an initiative unique to Wal-Mart. Other retailers, from Radioshack to Payless, have given the system a shot, though with varying degrees of ferocity. But Wal-Mart's adoption will make it standard. The whole enterprise underscores the dangers of the service economy, with its relentless focus on efficiency and terrifying absence of concern towards its workers. Given that service jobs are slated to be the fastest-growing over the next decade or so, a central focus for progressives will have to be endowing those workers with the bargaining power and voice to demand -- and receive -- better treatment. We talk about the need for better wages and benefits a lot, but workplace treatment is a critical component as well. The import of regular scheduling and predictable paychecks should not to be taken for granted. --Ezra Klein