The law includes language that says an employer must make a “good faith” determination of the lowest and highest salary it would pay for that position. However, the law itself law does not define what “salary” is; presumably that definition exists elsewhere.

I would therefore hope that if a company posted a range of $1-$1,000,000 for a job (let alone all jobs) they would get some scrutiny from regulators. But I don't know. I don't live there and I'm not a lawyer.

Still, the could post something like $50k - $500k and say to the regulators that it depends on so many factors.