I can't imagine Apple did this deliberately. Most large companies are aware that the PR costs of such mistakes are higher that the costs and would never deliberately try to screw over workers. It was probably an oversight by one/some of its managers or vendors. Spend enough time auditing any Fortune 500 company's worker policies at a plant, warehouse or retail store and I'm sure you'll find similar examples. Like the recent 60minutes covered 'Google driveby lawsuits against stores'.