Should it be important for ACC's 'no fault' compensation scheme to know where you got Covid-19 from, to give you health support, and rehabilitation? At the moment it is. However, barrister and ACC researcher Warren Forster says for the first time, contact tracing could provide prima facie evidence around whether catching a virus like Covid-19 is work-related. That means the likes of health workers, flight attendants or supermarket workers could more easily demonstrate whether they are eligible for cover. But that's of no benefit to partners or children of essential workers who they might have passed Covid-19 onto. Warren Forster says once again this raises the bigger picture problems of a system that is based on cause.