GrannyGravy They are only suggestions which have been bandied around. However, I agree with you that it's the "big boys" who need to pay for this. At the moment, too many of them are escaping paying taxes because they have clever accountants and have their HQ abroad, etc.
Companies choose to operate in the UK because they know that we have a relatively stable, educated, healthy population. The infrastructure isn't perfect, but it's better than in many places in the world and we have good market access. All of that doesn't come cheap and it's only right that big multinationals should contribute to the education and health of their staff and roads they come to work on and which they transport their goods, etc.
I'm still holding my breath for evidence that Labour really does have a big vision for industry and business and isn't just tinkering around with some headline promises.
IMO the first thing it should do is commit to staying in the EU and explain why that's the best option for workers.