Yes, that is not a liveable wage. Then UC can top it up, which takes from taxes.
Anyone working full time should receive a full liveable wage. Then, as you progress through the range of skills and knowledge you build on that upping the wage. On a healthy economy, we should not need to spend taxes on topping up full time workers rents and income.
Benefits should be for those ill, disabled or temporarily out of work.
Some people say that money gets taken from those who work hard to pay for those who do not work, but I do not agree. The economy, both UK and internationally, has many problems that governments keep ignoring, dragging down the line or making worst. They are not sorting basic issues like sensible wages, sensible house prices, re-structuringvthe NHS to make it workable, stop wasting millions from the NHS and council budgets on private companies and so on. So they keep pouring money into their pockets. Shuffling the crumbs amongst those in the working and middle class (now demoted) and trying to play one group against the other.
I just hope people open their eyes, they come together and they claim the value that they should be getting from their taxes.
And the issue with productivity. I do not see this clear at all. I think it has to be with stupid complexity of processes, rather than the workers themselves. As I do see people around me working hard day and day out. So if they work is less productive it must have to do with some other factors. Today, to do anything, you need like 20 emails. You are supposed to be working on the ground and checking your emails at the same time. Hierarchies are a bit lost and instead of instructions from one person, now you can easily get 3 or more, which just makes you confused. Many office jobs mean you have multiple inboxes to follow, why just why?