‘Shadow work’ – the hidden manual tasks that are outside the remit of people’s jobs, like filing expenses, chasing approvals, booking travel and reconciling invoices – is costing companies $1.7 trillion every year. That’s according to new global research from Perk (formerly TravelPerk) and Forrester Consulting. Perk and Forrester surveyed 8,000 employees and 700 leaders, and found that every…