By Frank Hartzell Automation trends are seen as key to fighting rising labor costs at the sanitation giant. Jim Fish, president and CEO of Waste Management (WM) – Get Waste Management, Inc. Report told Jim Cramer on a recent episode of the Mad Money TV show that labor inflation is among the company’s biggest challenges. The company saw 9% wage inflation last quarter, on top of an even bigger number in the preceding quarter. That’s why Waste Management is investing even more heavily in automation and technology to help reduce their labor dependence. Among other approaches, they have been replac…