Meat packing and agriculture jobs in the US are presently incredibly dangerous, under-regulated (wink-wink regulated large corporations who have immense political power through lobbyists and trade PACs), and often done by undocumented persons who cannot get compensation if they are maimed or killed. Interestingly, these industries often advertise wages in Central and South American countries' newspaper to encourage migration, legal and otherwise.
Nobody just deserve it, everyone has to find one and keep it. You never get anything in life because "you deserve it and the Universe has to give it to you", not in this Universe.
It's true that nobody gets something from the universe just because they deserve it. Which is why for several thousand years humans have grouped up into civilized societies where we can construct environments that better match how we think things should work. So that people can get what they deserve.
Since we're not talking about somebody adrift in interstellar space, your argument makes less sense. Instead you have to argue some variant on a) not everybody deserves a reasonably safe job, or b) people do deserve that but we as a society can't afford it.
(I don't think either of those is true, but at least they'd make sense.)
You just served a false dilemma. There are also options c and d and more.
Even having a society does not make wonders: we don't have a cure for cancer, we don't have a vaccine for Covid, having a functional society does not mean you can obtain everything, including safe jobs and decent lives, especially when the definitions of safe and decent are moving targets: versus 200 years ago we are living an utopia of safe jobs and decent lives. Just think logical, not only emotional.
If there are options c, d, and following, I'd like to hear them. But your second paragraph is pure option b, the notion that we can't afford it.
I think that's wrong. We of course can't afford everything, and I never said otherwise. But what we're talking about is "a safe (as possible) job". There's no particular reason to think that if Amazon takes proper worker safety precautions, suddenly they'll be out of business. Might Bezos be marginally less rich? Sure. Might Amazon customers pay a smidgen more? Sure. Will society collapse? No. Will some other workers suddenly not have a safe workplace? Also no.
If "we can afford it" then please explain why 90% of the manufactured goods purchased in USA are made in China; is it because competition and lower wages in China? We can afford to pay more the USA workers to produce it locally, but we don't. Why?
I don't care about how rich is Bezos, it is not my problem (or, more exactly, not a problem for me), but the blanket statements like "everyone deserves X" and "we can afford Y" are a problem: we don't simply deserve and we cannot afford most things.
"The society" is a generic term to hide behind; the society does not provide jobs, businesses do (or self-employment). Nobody provides a "dignified life", that is another vague and non-measurable term to hide behind.
problem with your utopia is that in order to provide the vagaries of a "dignified life" you are compelling people to labor for others. We have not yet achieved post scarcity and there is never a guarantee that enough people in your society will participate in good faith to sustain those who are, for whatever reason, less productive.
That's not an argument against a safety net, just the opposing force that makes the correct (and possible) solution somewhere in between [UBI, euthanization), and different for each grouping of people.
we seem to have enough people participating to sustain large scale warfare operations around the globe, bail out entire industries, and pay politicians above average salaries. imagine what we could do for society if not for spending so much money on these pursuits which large swaths of our population find immoral.