That almost certainly refers to rewarding non-strikers relative to strikers after the strike has been resolved. It is not against the law to cease paying wages

That almost certainly refers to rewarding non-strikers relative to strikers after the strike has been resolved. It is not against the law to cease paying wages and providing benefits to strikers while the strike is in progress. Of course with tuition there is a pro-rata issue, i.e. the benefit should return after the strike is over.