Bernie Sanders launches investigation into working conditions at Amazon

Senator seeks information about systematically underreported' injury rates and turnover at US's second-largest employer

Bernie Sanders has launched an investigation into Amazon that will focus on working conditions inside the warehouses of the online marketplace, which is also the nation's second-largest employer.

In a letter to Amazon CEO Andy Jassy, the 81-year-old US senator from Vermont and chair of the influential Senate committee on health, education, labor and pension (Help) demanded information about systematically underreported" injury rates, turnover, productivity targets, and adherence to federal and state safety guidelines at the e-commerce giant.