Providing a basic income for all could dramatically shift the balance of power away from employers and towards a more equitable relationship with employees. Current practices such as adopting zero-hour contracts show that large sections of society are powerless to resist unfair working environments, which aside from low pay can also include sexual discrimination, harassment, and workplace bullying, simply because those affected have no alternative but to accept employment on whatever terms are offered. When employers face a real threat of resignation where employees are mistreated or neglected, then they will be incentivised to make their workplaces safe and equitable.
A basic income would also rebalance wages between jobs which are enjoyable and those which are unpleasant or otherwise undesirable. Supply and demand would mean that those willing to do work that others won’t would be rewarded appropriately. In practice, this would benefit the poorest members of society most, but it is important to remember that these newly well-paid jobs would be open to everyone.