I was talking to a hairdresser just yesterday who is looking forward to reopening in Auckland because there's a lot of mops to chop up in that city. I can tell you, Madam Speaker, they're very excited. But one of the additional challenges that they face as a business is that they have some employees who are unwilling to be vaccinated and others who are unwilling to work in a place where there are unvaccinated. Most of their customers want to be assured that the staff are vaccinated and the legal framework for achieving that is very challenging, because under health and safety law they have an obligation almost to ensure vaccination is in place. The Health and Safety at Work Act requires a business or a person conducting a business undertaking—a PCBU, to use the jargon—to identify what risks there are, identify what mitigations there are to reduce the risk, and if there's something they could do to reduce the risk, then they have to do it. So they sit there and say, "Well, COVID-19 is a pretty obvious risk around the world right now. Vaccinations have been shown to dramatically reduce the risk." There's a 96 percent reduction in the chance of serious illness by taking the Pfizer vaccine, according to recent research in The New England Journal of Medicine. The world's greatest medical journal says that. So you see a strong case that as a PCBU, perhaps as a hairdresser, you'd really want to make sure that you were introducing a requirement to be vaccinated in that workplace.