andu* checked his watch. He was winding down the last 15 minutes of his shift at a vast Google datacentre site in Saint Ghislain, Belgium, in March, when the call came in. The 34 year old electrical tester had already worked almost 10 hours, but says such last minute jobs were normal: “I had no choice. People have been fired after saying no.” The task was one Sandu had done many times before and involved a series of tests measuring the safety and integrity of the electrical wiring. A protective...