First, almost every large employer is exempt from Labor Code 2806, via subsection (c), because their plans are all covered by ERISA.
Second, if you quit your employment, then you would also have provided the employer with an exemption under subsection (a) ("not inclusive of employment termination").
So, Labor Code 2806 cannot protect you, based upon your stated facts.
You could conceivably argue you relied to your detriment on the employer's misrepresentation of your benefits, and therefore, you have an express employment contract that grants you continuing healthcare benefits.
But, to make this case, you will need a lawyer, because that is a pure breach of contract action, and not something that either the U.S. Department of Labor or the Cal. Division of Labor Standards Enforcement.
For an employment rights lawyer referral, see this link
. For free/low cost legal aid, see this link.
Hope this helps.
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