So, this strike is only about pay and demanding a 17% pay raise?
Legally, yes. But if nurses were working in fab conditions and hadn't had the piss taken out of them for years by this government then this yet another shitty pay offer might not be the final straw. They have never had a national strike before.
Something has to change in hospitals. Nurses are facing yet another pay cut. Everyone is struggling to pay the bills. If more nurses leave because they can't afford to stay then conditions will get even worse.
Something has to change. A pay increase would help retain staff. Retaining staff would be an improvement over losing even more staff.
Improving pay is linked to improving working conditions.