HARTFORD -- Susan Schaefer LaRose quit her sales job in May after 18 years with pharmaceutical giant Eli Lilly and Co., frustrated by long work weeks that frequently encroached on weekends and vacations. And then she sued. Her lawsuit, part of a series of class action claims filed last month against nine major drug companies, seeks tens of millions of dollars in back pay for the thousands of drug company salespeople across the country. "I was told when I started with Eli Lilly that I was exempt from overtime," said Schaefer LaRose, a 50-year-old mother of two from Chittenango, N.Y.,...