Tim Oldman, Leesman CEO, said that it is imperative that business leaders analyse the reasons behind poor productivity levels and that they look to working environments. "As a global, independent think-tank, the Leesman Index measures workplaces effectiveness in supporting work activities as well as recording employee satisfaction levels with numerous workplace features and services," said Oldman. "We have spoken to more than 135,000 employees across the world and the latest data has revealed that office environments can and do hinder productivity.