If UBI is implemented minimum wage could also be removed.
At present we have a situation where there are probably many very non-sucky jobs that could be done, but it’s not commercially viable to employ people for them at minimum wage.
Maybe some of the existing sucky customer service type jobs are only as bad as they are because companies are forced to extract $x/hour. e.g. if McDonalds could maybe they’d hire more people at a lower rate and make the job less stressful, resulting in happier employees and customers. As things are McDonalds must extract $x/hour or they will not be profitable, this ensures it’s a terrible place to work, and usually understaffed.
Replacing minium wage with UBI is definitely a net good.
Don't buy the "companies will start treating you humanely if only they could pay you less". Corporations, particularly publicly traded ones, are in competition for profit. In most sectors exploiting your employees to the fullest presents a positive return on quarterlies no matter how much or little you pay them. Maximizing return on dollars committed is fundamental to growing revenues.
UBI helps improve worker condition by making the negotiation between labor and capital more equitable. So long as one person comes to the table for their needs and the other comes for their ones the former is always disadvantaged and ripe for exploitation.
At present we have a situation where there are probably many very non-sucky jobs that could be done, but it’s not commercially viable to employ people for them at minimum wage.
Maybe some of the existing sucky customer service type jobs are only as bad as they are because companies are forced to extract $x/hour. e.g. if McDonalds could maybe they’d hire more people at a lower rate and make the job less stressful, resulting in happier employees and customers. As things are McDonalds must extract $x/hour or they will not be profitable, this ensures it’s a terrible place to work, and usually understaffed.