you can keep cobra for 18 months unless you have another qualifying event. I would suggest you try not to get on cobra unless you have to because it is very expensive. (basically you pay the company cost of your benefits)
Info on Cobra:
For more information about your rights under ERISA, including COBRA, the Health Insurance Portability and Accountability Act (HIPAA), and other laws affecting group health plans, contact the U.S. Department of Labor's Employee Benefits Security Administration (EBSA) in your area or visit the EBSA website at www.dol.gov/ebsa.
Diagnosed w/ Crohn’s Disease March 2007 On 150mg Azathioprine (generic Imuran), Pentasa, & Entocort (take zofran for nausea now)
Diagnosed w/ Fibromyalgia May 2007 also on Soma
Also have Arthritis, and feel like I am falling apart sometimes...