I think its beneficial to have daycare workers trained in epipen administration, just as they are trained in CPR.  I would make it something optional, not mandatory, and parents can choose whether to send their kids to a daycare with trained workers or not. 

I think there should be a release form provided to daycares that parents can sign releasing the daycare from epipen administration and any entailed liabilities for daycares who do not want to train workers or use epipens. However, by providing free training, it would be silly for daycares not to take advantage of that service.  

I think parents should provide the epipens and the government should not take on that burden.  Maybe they can use the money to provide free training to daycare workers and maybe even have monetary incentives for daycares who participate. 

Daycares usually avoid meals that are allergenic, and Id say once a kid is over the age of 2.5, the parents know if they have specific food allergies.  Maybe daycares that have older kids dont need the training. But I dont know the statistics, some research numbers would help.