Amazon must ‘do a better job’ for its workers, says Jeff Bezos

But company's founder pushes back against criticism of its work practices in letter to shareholders

Amazon needs to do a better job" for its employees, Jeff Bezos told shareholders in his final letter as chief executive of the online giant, but he also pushed back against criticism of the company's work practices.

Bezos, who reclaimed his title as the world's richest person this year, said that Amazon's recent defeat of an attempt by some workers to form the company's first union in Alabama did not bring him comfort".