What group health insurance is and why companies offer it

Group health insurance is a health plan that a company buys from an insurance carrier and offers to its employees. The employer typically pays part of the premium — the monthly cost — and the employee pays the rest through payroll deduction. The insurance covers medical, dental, and sometimes vision care for the employee and their family members.

Companies offer group health insurance for several reasons. It can help attract and keep workers, since health coverage is often a deciding factor when someone chooses a job. It also provides a tax advantage: the employer's contribution to premiums is tax-deductible as a business expense, and employees do not pay income tax on the employer's share of the premium.

Group plans are usually cheaper per person than individual insurance because the risk is spread across many employees. An insurance company is more willing to offer lower rates when covering 50 people than when covering one person, because some will use little care and others will use more, balancing out the cost.

Key Takeaways

  • Group health insurance is purchased by the employer and offered to employees, with the employer usually paying 50 to 80 percent of the premium cost.
  • The employer must decide on plan type (HMO, PPO, HDHP, or POS), deductible amount, and which family members are covered before shopping for a carrier.
  • The employer is responsible for collecting employee premium payments, sending them to the insurance carrier, and keeping records of who is covered.
  • Employees must enroll during open enrollment or within 30 to 60 days of hire, and coverage usually starts on the first or fifteenth of the month.
  • The employer must comply with federal rules including HIPAA privacy protections, COBRA continuation coverage, and the Affordable Care Act's employer mandate if the company has 50 or more full-time employees.

Plan types and how they differ in cost and coverage

An HMO (Health Maintenance Organization) requires employees to choose a primary care doctor and get referrals to see specialists. Employees can only use doctors and hospitals in the HMO's network, except in emergencies. HMOs usually have lower premiums and lower out-of-pocket costs, but less flexibility in choosing providers.

A PPO (Preferred Provider Organization) lets employees see any doctor without a referral, but they pay less if they use doctors in the plan's network. Employees can go out of network and still have some coverage, but they pay more. PPOs have higher premiums than HMOs but more choice.

An HDHP (High Deductible Health Plan) has a lower premium but a higher deductible — the amount the employee must pay out of pocket before insurance starts paying. HDHPs are often paired with a Health Savings Account (HSA), which lets employees set aside pre-tax money for medical expenses. HDHPs work well for companies with younger, healthier workforces and for employees who do not expect to use much care.

A POS (Point of Service) plan combines features of HMOs and PPOs: employees choose a primary care doctor like in an HMO, but can see out-of-network doctors for a higher cost, like in a PPO. POS plans fall between HMOs and PPOs in both premium cost and flexibility.

Steps to set up group health insurance for your company

First, decide how much of the premium the company will pay. Most employers cover 50 to 80 percent of the employee premium, with the employee paying the rest. The employer must also decide whether to cover spouses, domestic partners, and children, and at what age coverage ends for dependents.

Next, choose the plan type and coverage details. This means deciding on the deductible (how much employees pay before insurance kicks in), copays (fixed amounts for doctor visits), and coinsurance (the percentage employees pay after the deductible). The company should also decide whether to offer dental and vision coverage, which are separate from medical insurance.

Then, shop for carriers. The employer can work with an insurance broker, who represents multiple carriers and can compare plans, or contact carriers directly. The broker or carrier will ask for the number of employees, their ages, the company's location, and what coverage the company wants. The carrier will quote a monthly premium based on this information.

Once a plan is chosen, the employer must set an open enrollment period — usually 30 to 60 days — when employees can enroll or make changes. The employer collects enrollment forms, verifies that employees meet any waiting period requirements, and sends the enrollment information to the insurance carrier. Coverage typically begins on the first or fifteenth of the month following enrollment.

What the employer must do after enrollment

The employer becomes the plan administrator, meaning the company is responsible for collecting employee premium payments each month and sending them to the insurance carrier. If an employee does not pay their share, the employer must follow the company's policy — usually removing them from coverage after a set number of missed payments.

The employer must keep records of who is covered, when coverage started, and when it ends. When an employee leaves the company, the employer must notify the insurance carrier so coverage stops. The employer must also handle life events: if an employee gets married, has a baby, or loses other coverage, they may be able to enroll outside the regular open enrollment period.

The employer receives the insurance carrier's explanation of benefits (EOB) documents and claim information, though individual employee medical records remain confidential under HIPAA. The employer must keep these documents find and only share them with people who need them for plan administration.

Federal rules the employer must follow

HIPAA (Health Insurance Portability and Accountability Act) requires the employer to protect employee health information. The employer cannot share an employee's medical history or claims with other employees, and must have a privacy policy that explains how health information is used and protected.

COBRA (Consolidated Omnibus Budget Reconciliation Act) requires companies with 20 or more employees to let workers keep their health insurance for up to 18 months after they leave the job, though the employee pays the full premium plus a small administrative fee. The employer must notify employees of this right when they enroll and again when they leave.

The Affordable Care Act (ACA) requires companies with 50 or more full-time employees to offer health insurance or pay a penalty. The ACA also requires that the employer's contribution cover at least 60 percent of the premium and that the employee's out-of-pocket costs do not exceed a set amount per year. The employer must report coverage information to the IRS using Form 1095-B.

The employer must also follow state insurance laws, which vary. Some states require coverage of specific services (like fertility treatment or mental health care), set limits on how much employees can be charged, or require the employer to offer certain plan types.

Common challenges and how to handle them

Premiums rise each year, sometimes by 5 to 15 percent or more. The employer can manage costs by choosing a higher deductible, offering an HDHP, or asking employees to pay a larger share of the premium. Some employers also use wellness programs — offering discounts to employees who complete health screenings or fitness activities — though the savings are usually modest.

Employees sometimes do not understand their coverage. The employer should provide a summary of benefits and coverage (SBC) document, which explains what the plan covers, what it costs, and what is not covered. The employer can also hold enrollment meetings or send emails explaining the plan before open enrollment.

Turnover can make group insurance less stable. If many young, healthy employees leave and are replaced by older employees or those with health conditions, the insurance carrier may raise rates significantly at renewal. Some employers address this by improving benefits or pay to reduce turnover.

Compliance mistakes — like missing COBRA notices or failing to report coverage to the IRS — can result in penalties. The employer should keep a compliance checklist and calendar, or work with a broker or HR consultant to stay on track.

Frequently Asked Questions

Can a small company with just a few employees get group health insurance?

Yes. Most insurance carriers will quote group plans for companies with as few as two employees, though some require a minimum of three to five. Small companies may pay higher premiums per person than large companies because the risk is not spread as wide. Some small employers use a Small Business Health Options Program (SHOP) marketplace, which is run by the government and sometimes offers tax credits.

What happens to an employee's coverage if they take unpaid leave?

This depends on the employer's policy and the insurance carrier's rules. Some employers continue coverage during short unpaid leaves; others require the employee to pay the full premium themselves. The employer should clarify this in the plan documents and tell employees before they take leave.

Can an employer change the health plan mid-year?

Generally, no. The employer can only change plans during open enrollment or if a may have access to event occurs — such as a major rate increase, a carrier leaving the market, or a significant change in the workforce. If the employer wants to change plans mid-year, they must get written consent from the insurance carrier and usually from employees as well.

What if an employee wants to add a spouse or child after open enrollment?

The employee can add a family member outside open enrollment if they have a may have access to life event: marriage, birth, adoption, or loss of other coverage. The employer must receive proof of the event (marriage certificate, birth certificate, or letter from the other insurance carrier) within 30 to 60 days. Coverage usually starts on the first of the month after the employer approves the change.

How does the employer know if they have to offer health insurance under the ACA?

The employer counts full-time employees — those working 30 or more hours per week on average. If the company has 50 or more full-time employees in a year, the employer must offer coverage to at least 95 percent of full-time employees and their children (up to age 26) or pay a penalty. Part-time employees do not count toward the 50-employee threshold, but if offered coverage, they count toward the 95 percent requirement.