You might qualify to extend your health benefits if you're laid off

— -- Even if you've done everything you're supposed to do to prepare for a layoff — built up an emergency fund, paid off your credit cards, set up an account on LinkedIn — losing your employer-provided health insurance could demolish your finances. Your health could suffer, too.

While many insurers offer individual policies, they're primarily targeted at the young and healthy. Individuals who are older or have medical problems are often turned down or charged prohibitively high rates.

The economic stimulus package enacted this year seeks to address this problem by lowering the cost of continuing your former employer's health insurance. Unfortunately, many laid-off workers are discovering that they're ineligible for this subsidy. Others may need to take extra steps to demonstrate they're qualified.

Under the federal Consolidated Omnibus Budget Reconciliation Act, or COBRA, laid-off workers can continue their former employer's health coverage for up to 18 months. In the past, participants had to pay 102% of the premiums, making COBRA unaffordable for most unemployed workers.

The stimulus package subsidizes 65% of COBRA premiums for up to nine months for individuals who were laid off between Sept. 1, 2008, and the end of this year. With the subsidy, the average family will pay $377 a month or $140 for an individual, according to the Kaiser Family Foundation.

That's still more than most employees pay for insurance while they're working. But if you're eligible for the subsidy, you should try to take advantage of it, says Ron Pollack, executive director of Families USA, a health care advocacy group.

Signing up for COBRA will allow you to continue the same coverage you had when you were working, even if you or anyone in your family has medical problems. In addition, it will preserve your ability to get insurance in the future, even if you have a pre-existing medical condition.

Reasons you may be ineligible for the COBRA subsidy:

•Your former employer has gone out of business or terminated its group coverage. These companies are no longer covered by COBRA, says Michael Langan, principal at Towers Perrin, a human resources consultant.