CBS Outdoor workers, who put posters up on the Tube, are being made to use a tool to smooth the posters out, which puts a lot of pressure on their hands and is causing them damage. The company recognise this, and has ordered some replacements from the USA. But as they say, the USA seems like a different universe the amount of time it's taking!
In the meantime they must insist on their right not to be injured in the course of their work. If they refused to put the posters up, the company would have no cash coming in, management might start to take their workers' welfare seriously!