The workplace is changing in the private sector Bruce. Back in the day large multi nationals were the biggest employers, but now it's small and medium enterprises. Many of these sail very close to the wind and won't be able to withstand the multitude of changes this LP are going to throw at them, both financial and workplace practices.
The unions will have very little representation in these smaller enterprises other than in the building sector I would have thought.
Not to mention the share grab that they propose, and Brexit as well, which even if you're a supporter of it you must accept will require some getting used to by businesses. Change upon change upon change at a time when businesses are already coping with various technological disruptions seems a recipe for disaster to me.