The alternative is a syringe and adrenaline ampoule, which can be tricky for someone not used to drawing up a syringe of adrenaline and delivering the injection.
Mr Lawrence said if his son did not have an EpiPen he would have to get all his teachers trained in injecting him if he had a reaction.
"It doesn't matter how old the child is. Even adults that are going into anaphylaxis aren't going to have time to do it themselves."
Mr Lawrence has not had to use an EpiPen on his son yet, but did have to use one when another child in his son's holiday programme had an allergic reaction.
"It's about time the Government stands up and does something for the New Zealand people instead of worrying about small things. This is a life-saving drug. They could have easily pushed this through and made it more accessible to lots of families."
Mr Lawrence's petition can be found on Facebook under the page name: Petition for EPI PEN funding from Pharmac and Ministry of Health NZ.