Several new books are pertinent to topics frequently covered by this blog. Three worth noting are about low-income savers, older workers, and small employers with retirement plans that are overdue for an upgrade. Here are brief descriptions: “A Fragile Balance: Emergency Savings and Liquid Resources for Low-Income Consumers:”: For low-wage workers in fast food, retail, and similar jobs, just finding enough money for living expenses is like squeezing blood from a turnip. Research shows that many want to save, and the absence of this backstop only increases their financial fragility. The default is often to resort to high-cost debt, which further confounds their ability to pay the bills, much less weather the next emergency such as a car repair. Finding…