A woman with Covid-19 went to work in Auckland's CBD while symptomatic, and First Union says the incident proves that sick leave is not just a nice-to-have.
In front-facing roles it's really important that people are fit to work to protect everyone they are coming in contact with, he said.
"Sick leave is something that's there to protect workers and there to protect everyone.
"The Covid situation shows that it's not a nice-to-have, this is something we need to have in place, we need to have robust systems so people can use sick leave when they need it."