Should Retirees Worry About AT&T's Dividend?

U.S. telecom company AT&T (NYSE: T) is a popular dividend stock, especially for retirees who look to the company for its utility-like stability and a generous dividend that yields a whopping 7.4% today. What's more, the stock's colossal yield might have some wondering whether the company can afford its dividend. Why is AT&T struggling?