In economics, simply put, external costs are costs that a company profiting from selling goods or services forces others to pay.
An example would be dumping toxic waste into a river rather than paying a fee to have it safely disposed of.
In the above case, everyone pays. Society pays.
One external cost I have not heard people talk about is employee burnout.
When corporations like Walmart or Amazon are allowed to butcher their way through the workforce and leave people broken, tired, and often mentally ill, we all pay.
For realistic change, I support a law that requires severance, especially when people quit. Also, taxing companies based on their turnover rate would be better for society too.
Read more about external costs in the link below.
https://www.economicshelp.org/blog/glossary/external-costs/