Some states are starting to move in that direction too,like Washington state but this isn't as strong as California :

https://www.geekwire.com/2017/scaled-back-bill-aimed-providi...

Apparently Google and labor unions supported the original bill, but the article says that's not the case for Amazon and Microsoft

The scaled back bill removed those points:

> Make noncompetition agreements void if the employee is a temporary or seasonal employee, or is terminated without just cause or laid off.

> Create a rebuttable presumption that agreements restricting competition for more than one year after termination of employment or for employees who are not executives are unreasonable.

> Make noncompetition agreements with independent contractors void