You may not be eligible for COBRA if you:
Don't enroll in 60 days after losing health coverage or getting a COBRA notice
Work for a church or church related association or college
Don't notify the administrator in 60 days after a divorce or separation
Don't pay the first premium in 45 days after electing
Move outside of your COBRA plan's coverage area
Old employer doesn't notify the administrator in 30 days of your termination or reduced hours
Get medicare, without contacting the administrator
Weren't in a group plan
Have private health insurance
Have a policy through an association
Are terminated for gross misconduct
Are a federal employee
Employer had under 20 employees
Are located in Washington DC
http://www.cobrahealth.com/noteligableoffered.htm