Employee health insurance is typically obtained through an employer-sponsored plan. Here's a breakdown of how it generally works:

1. Eligibility: Most employers offer health insurance to full-time employees. Some also extend benefits to part-time employees. Eligibility requirements (such as a minimum number of hours worked per week) are usually outlined in the company's benefits policy.
2. Enrollment:

   Initial Enrollment: When you start a new job, you'll usually have a limited time frame (e.g., 30-60 days) to enroll in the company's health insurance plan. This is often referred to as your "initial enrollment period."

   Open Enrollment: If you miss your initial enrollment period or want to make changes to your existing coverage, you can typically do so during the company's annual "open enrollment" period. This usually occurs once a year.

   Qualifying Life Event: Outside of the initial or open enrollment periods, you can typically only enroll or make changes to your health insurance if you experience a "qualifying life event," such as marriage, divorce, birth or adoption of a child, or loss of other coverage.

3. Plan Options: Employers often offer a variety of health insurance plans, such as:
   • Health Maintenance Organization (HMO)
   • Preferred Provider Organization (PPO)
   • High-Deductible Health Plan (HDHP) with a Health Savings Account (HSA)

   Each plan type has different features, costs, and levels of coverage. Carefully review the plan details to choose the option that best meets your needs.

4. Cost Sharing: You'll typically share the cost of health insurance with your employer. Your portion of the premium will likely be deducted from your paycheck. You may also have to pay out-of-pocket costs such as deductibles, copays, and coinsurance when you receive medical care.
5. Review Plan Documents: Once you enroll in a health insurance plan, be sure to carefully review the plan documents, including the Summary of Benefits and Coverage (SBC) and the plan's official policy documents. These documents will outline the details of your coverage, including what services are covered, what your costs will be, and any limitations or exclusions.

For more detailed information, consult your employer's HR department or benefits administrator. They can provide you with specific details about the health insurance plans offered by your company, as well as enrollment procedures and deadlines.