If paying your lowest tier workers a living wage and good benefits would disrupt the business, could it be that your business relies on suffering to exist?
If living wage is substantially different from the market rate, employer cannot afford it without going out of business. Employers don't have infinite money, they have checks and balances. Paying employees more would require different pricing model, for example. If your pricing is far enough from what customer is ready to pay, customer is not paying and you end up out of business.
Basically, employer's responsibility is to pay market rate, not living wage. If there's a disconnect, it needs to be addressed on the legislation level, not individual employer level.
a low market rate means that there are a lot of poor schmucks willing to work for scraps.
if a business can not survive without paying a living wage then it should not exist in the first place. no amount of legislation can fix that
Which, honestly, maybe it shouldn't.