The law generally applies to all group health plans maintained by private-sector employers with 20 or more employees, or by state or local governments. The law does not apply to plans sponsored by the Federal Government or by churches and certain church-related organizations.
In addition, many states have “state continuation” laws similar to COBRA, including those that apply to health insurers of employers with less than 20 employees (sometimes called mini-COBRA). Check with your state insurance commissioner’s office to see if such coverage is available to you.