Health insurance is an insurance that covers the whole or a part of the risk of a person incurring medical expenses, spreading the risk over a large number of persons. By estimating the overall risk of health care and health system expenses over the risk pool, an insurer can develop a routine finance structure, such as a monthly premium or payroll tax, to provide the money to pay for the health care benefits specified in the insurance agreement.[1] The benefit is administered by a central organization such as a government agency, private business, or not-for-profit entity.
Between October 28 and November 13, 2009, Democratic Senator Dick Durbin's campaign organization polled Americans to rank their support for various forms of the "public option" currently under consideration by Congress for inclusion in the final health care reform bill. The 83,954 respondents assigned rankings of 0 to 10. A full national option had the most support, with an 8.56 average, while no public option was least favored, with a 1.10 average.[52]
If an employer pays the cost of an accident or health insurance plan for his/her employees, including an employee’s spouse and dependents, the employer’s payments are not wages and are not subject to Social Security, Medicare, and FUTA taxes, or federal income tax withholding.  Generally, this exclusion also applies to qualified long-term care insurance contracts.  However, the cost of health insurance benefits must be included in the wages of S corporation employees who own more than two percent of the S corporation (two percent shareholders).
Coverage limits: Some health insurance policies only pay for health care up to a certain dollar amount. The insured person may be expected to pay any charges in excess of the health plan's maximum payment for a specific service. In addition, some insurance company schemes have annual or lifetime coverage maxima. In these cases, the health plan will stop payment when they reach the benefit maximum, and the policy-holder must pay all remaining costs.
A 2011 study found that there were 2.1 million hospital stays for uninsured patients, accounting for 4.4% ($17.1 billion) of total aggregate inpatient hospital costs in the United States.[12] The costs of treating the uninsured must often be absorbed by providers as charity care, passed on to the insured via cost-shifting and higher health insurance premiums, or paid by taxpayers through higher taxes.[13]
Most FSA participants are middle income Americans, earning approximately $55,000 annually.[110] Individuals and families with chronic illnesses typically receive the most benefit from FSAs; even when insured, they incur annual out-of-pocket expenses averaging $4,398 .[111] Approximately 44 percent of Americans have one or more chronic conditions .[112]
In 2006, a new system of health insurance came into force in the Netherlands. This new system avoids the two pitfalls of adverse selection and moral hazard associated with traditional forms of health insurance by using a combination of regulation and an insurance equalization pool. Moral hazard is avoided by mandating that insurance companies provide at least one policy which meets a government set minimum standard level of coverage, and all adult residents are obliged by law to purchase this coverage from an insurance company of their choice. All insurance companies receive funds from the equalization pool to help cover the cost of this government-mandated coverage. This pool is run by a regulator which collects salary-based contributions from employers, which make up about 50% of all health care funding, and funding from the government to cover people who cannot afford health care, which makes up an additional 5%.[31]
The average rates paid for health insurance plans are inversely related to the amount of coverage they provide, with Platinum plans being the most expensive and Bronze / Catastrophic plans being the cheapest. The following table shows the average rates a 21 year old would pay for individual health insurance based on plans in the different tiers. Older consumers would see their plans increase according to the age scale set by the federal guidelines.
As far as the compulsory health insurance is concerned, the insurance companies cannot set any conditions relating to age, sex or state of health for coverage. Although the level of premium can vary from one company to another, they must be identical within the same company for all insured persons of the same age group and region, regardless of sex or state of health. This does not apply to complementary insurance, where premiums are risk-based.

When small group plans are medically underwritten, employees are asked to provide health information about themselves and their covered family members when they apply for coverage. When determining rates, insurance companies use the medical information on these applications. Sometimes they will request additional information from an applicant's physician or ask the applicants for clarification.[73]
Premiums, or the cost of the medical coverage, are based on some factors including country of origin, age, medical history, etc. It is advised to have more comprehensive insurance for US medical coverage because it can cost a lot, but the costs of not having it can be much higher. For example, the tests and scans doctors often run are costly and typically not covered by budget medical insurance plans.
Individuals injured on the job while employed by private companies or state and local government agencies should contact their state workers' compensation board. The Department of Labor has several programs designed to prevent work-related injuries and illnesses. You may obtain information about these programs by visiting the Workplace Safety & Health page.
The US health insurance market is highly concentrated, as leading insurers have carried out over 400 mergers from the mid-1990s to the mid-2000s (decade). In 2000, the two largest health insurers (Aetna and UnitedHealth Group) had total membership of 32 million. By 2006 the top two insurers, WellPoint (now Anthem) and UnitedHealth, had total membership of 67 million. The two companies together had more than 36% of the national market for commercial health insurance. The AMA has said that it "has long been concerned about the impact of consolidated markets on patient care." A 2007 AMA study found that in 299 of the 313 markets surveyed, one health plan accounted for at least 30% of the combined health maintenance organization (HMO)/preferred provider organization (PPO) market. In 90% of markets, the largest insurer controls at least 30% of the market, and the largest insurer controls more than 50% of the market in 54% of metropolitan areas.[116] The US Department of Justice has recognized this percentage of market control as conferring substantial monopsony power in the relations between insurer and physicians.[117]
The types of coverage available to small employers are similar to those offered by large firms, but small businesses do not have the same options for financing their benefit plans. In particular, self-funded health care (whereby an employer provides health or disability benefits to employees with its own funds rather than contracting an insurance company[68]) is not a practical option for most small employers.[69] A RAND Corporation study published in April 2008 found that the cost of health care coverage places a greater burden on small firms, as a percentage of payroll, than on larger firms.[70] A study published by the American Enterprise Institute in August 2008 examined the effect of state benefit mandates on self-employed individuals, and found that "the larger the number of mandates in a state, the lower the probability that a self-employed person will be a significant employment generator."[71] Beneficiary cost sharing is, on average, higher among small firms than large firms.[72]
Between October 28 and November 13, 2009, Democratic Senator Dick Durbin's campaign organization polled Americans to rank their support for various forms of the "public option" currently under consideration by Congress for inclusion in the final health care reform bill. The 83,954 respondents assigned rankings of 0 to 10. A full national option had the most support, with an 8.56 average, while no public option was least favored, with a 1.10 average.[52]
HMO (Health Maintenance Organization) - Offers healthcare services only with specific HMO providers. Under an HMO plan, you might have to choose a primary care doctor. This doctor will be your main healthcare provider. The doctor will refer you to other HMO specialists when needed. Services from providers outside the HMO plan are hardly ever covered except for emergencies. 
Network-based plans may be either closed or open. With a closed network, enrollees' expenses are generally only covered when they go to network providers. Only limited services are covered outside the network—typically only emergency and out-of-area care. Most traditional HMOs were closed network plans. Open network plans provide some coverage when an enrollee uses non-network provider, generally at a lower benefit level to encourage the use of network providers. Most preferred provider organization plans are open-network (those that are not are often described as exclusive provider organizations, or EPOs), as are point of service (POS) plans.
^ Leichter, Howard M. (1979). A comparative approach to policy analysis: health care policy in four nations. Cambridge: Cambridge University Press. p. 121. ISBN 978-0-521-22648-6. The Sickness Insurance Law (1883). Eligibility. The Sickness Insurance Law came into effect in December 1884. It provided for compulsory participation by all industrial wage earners (i.e., manual laborers) in factories, ironworks, mines, shipbuilding yards, and similar workplaces.

^ Bump, Jesse B. (19 October 2010). "The long road to universal health coverage. A century of lessons for development strategy" (PDF). Seattle: PATH. Retrieved 10 March 2013. Carrin and James have identified 1988—105 years after Bismarck's first sickness fund laws—as the date Germany achieved universal health coverage through this series of extensions to minimum benefit packages and expansions of the enrolled population. Bärnighausen and Sauerborn have quantified this long-term progressive increase in the proportion of the German population covered by public and private insurance. Their graph is reproduced below as Figure 1: German Population Enrolled in Health Insurance (%) 1885–1995.
The site has a world-wide audience and employment laws and regulations vary from state to state and country to country, so the site cannot be definitive on all of them for your workplace. When in doubt, always seek legal counsel or assistance from State, Federal, or International governmental resources, to make certain your legal interpretation and decisions are correct. The information on this site is for guidance, ideas, and assistance only.
PPO (Preferred Provider Organization) - A type of insurance plan that offers more extensive coverage for the services of healthcare providers who are part of the plan's network, but still offers some coverage for providers who are not part of the plan's network. PPO plans generally offer more flexibility than HMO plans, but premiums tend to be higher.

Efforts to pass a national pool were unsuccessful for many years. With the Patient Protection and Affordable Care Act, it became easier for people with pre-existing conditions to afford regular insurance, since all insurers are fully prohibited from discriminating against or charging higher rates for any individuals based on pre-existing medical conditions.[31][32] Therefore, most of the state-based pools shut down.[33] As of 2017, some remain due to statutes which have not been updated, but they also may cover people with gaps in coverage such as undocumented immigrants[33] or Medicare-eligible individuals under the age of 65.[33]