Health insurance is not a one-size-fits-all product, so many employers offer a choice of health plans for their workers.

Your job is to think about your health care needs and choose the plan that matches them best. Here are five questions to ask when comparing group health plans.

1. What's my share of the premium?

Most employers pay a large portion of the annual premium for the health plan. Ask how much your share would be for each of the plans offered.

Although it's unwise to choose a plan based on cost alone, price is still an important factor to consider.

2. How much do I pay out of pocket for services?

Learn how much the deductible, co-payments and co-insurance are for each plan, as well as the cap on out-of-pocket expenses. The deductible is the amount you pay out of pocket for covered services before insurance kicks in. Co-payments are flat payments you make for each doctor's visit. Co-insurance is the portion of medical bills you pay after the deductible is satisfied and up to the cap on out-of-pocket expenses.

Weigh costs carefully. Don't choose a plan just because it has the lowest co-payment for doctor visits or smallest deductible. Consider all the costs, including your share of the premium. Generally, the higher the deductible, the lower the premium.

3. Who is in the provider network?

Check whether the doctors and hospitals your family needs are included in the plan's network. Also, make sure there's a healthy choice of specialists.

A high-quality network is important because you pay more out of pocket to see doctors outside the network.

4. What is covered?

Dig into the details of the plan to learn which services are covered and at what level.

5. Is a financial account for out-of-pocket costs available?

The employer might offer a tax-advantaged account to help you budget for out-of-pocket expenses. Some high-deductible plans can be paired with a health savings account, for instance. This year, you can save up to $3,100 for yourself or $6,250 for a family in an HSA and additional $1,000 if you're 55 or older. Unused money from an HSA can be rolled over to the next year, and the account is portable, so you keep it even if you change jobs.

Another type of account is a health reimbursement arrangement. The employer owns this account and contributes money to it, and the savings can be carried over to the next year.

A flexible spending account lets you set aside pretax dollars for out-of-pocket health care expenses. You have to use all the money set aside or lose it at the end of the year.

Not every one of these options will be available with each plan, so take that into consideration as you compare plans.