After Walmart raised its minimum starting pay to $10 an hour, some longer-term employees (like one earning $24 per hour) complained that the strictly entry-level increase was unfair to them. And when the head of a company called Gravity Payments decided to pay all his employees at least $70,000 a year, some longer tenure employees complained that it was unfair to raise new peoples’ salaries and not theirs. How should Walmart and Gravity address these complaints?