A "green card" is the U.S. government-issued card that allows for permanent residency in the United States. The original color of the card was green, but has since changed. Its official name is permanent residence card. Most green cards are valid for 10 years and must be renewed. The two most common ways to obtain a green card are through family and a job.

It depends on what type of green card you are applying for. For family-based green cards, a U.S. citizen or a green card holder can petition for a family member for an immigration visa.

A U.S. citizen may petition for:

• spouse,
• unmarried children under the age of 21,
• parents (the U.S. citizen petitioners must be 21 or older),
• unmarried sons or daughters over the age of 21,
• married children of any age, and
• brothers and sisters (the U.S. citizen petitioners must be 21 or older).

Certain permanent residents are also able to file for their alien relatives. To promote family unity, immigration law allows permanent residents of the United States (green card holders) to petition for certain eligible relatives to come and live permanently in the United States.

A green card holder may petition for:

• spouse, and
• unmarried children of any age.

Congress has limited the number of relatives who may immigrate under these categories each year, so there is generally a waiting period before an immigrant visa number becomes available. If your family relationship qualifies you as an eligible relative of a U.S. permanent resident, then you are in what is called a "family preference category."

For employment-based green cards, there are five preference categories. Of all the people applying for immigration, these people have a higher preference for selection. They include:

1. Individuals of extraordinary ability in the arts, sciences, education, business and athletics;
2. Professionals with advanced degrees and exceptional abilities in the arts, sciences and business;
3. Skilled workers and professionals holding at least a bachelor's degree;
4. Religious workers; and
5. Investors looking to create jobs in the U.S.

Because obtaining an employment-based green card can be a long process, employers often file for a work visa first.

People often think that getting a visa to work in the United States is impossible. But that's not the case. When it comes to work visas, what's important is the job, occupation or sponsorship. In general, the most common types of visas for temporary work include:

• H visas. For certain qualified temporary workers and trainees;
• L visas. For employees of international companies being transferred to the U.S.
• E visas. For certain types of investors or business people.
• O, P visas. For those of extraordinary ability in sciences, the arts, education, business as well as athletes and entertainers.
• R visas. For religious workers.
• TN visas. For professionals from Canada or Mexico.

These visas allow the holder to bring their spouse and children.

Because of the scrutiny of nonimmigrant visas, it's essential to understand the limits, conditions and restrictions of each one to have a better chance of success and approval of your visa application.

The process for obtaining a work visa varies by the type of visa. The most common type of work visa is the H1-B visa, which allows foreign workers to come temporarily to the U.S. to work for a U.S. company. The process to get an H1-B visa generally includes the following steps (there are a limited number of H1-B visas available each year and because demand for these visas is more than what is available, petitions are usually selected by a lottery system):

1. For those in certain occupations, the U.S. company files a Labor Condition Application (Form ETA-9035) with the state department of labor or employment agency;
2. The state department of labor reviews the application and certifies it is necessary to hire the foreign worker;
3. Certain applicants need to submit a Temporary Labor Certification Application
4. The company files the approved form along with a Petition for a Nonimmigrant Worker (Form I-129) and any required supplements with the USCIS (U.S. Citizenship and Immigration Service) service center in the region where the job will be located;
5. The USCIS service center staff reviews the application to make sure the job offer and position qualify, and if they do, sends you an approval notice.
6. You file the approval notice along with an Application for Nonimmigrant Visa (Form DS-156) with the U.S. Consulate in your country;
7. A consular officer reviews your application and if all the requirements are met, stamps the H1-B visa in your passport.

The Social Security Administration has a five-step review process for determining disability in adults. It includes:

1. The applicant's current work activity;
2. The severity of the impairment(s);
3. Whether the impairment automatically qualifies as a disability (more information on qualifying impairments can be found on the Social Security Administration's website);
4. Ability to do past work; and
5. Ability to do other work based on age, education and work experience.

The Social Security disability insurance program has three categories of individuals who qualify for benefits. They include:

1. A disabled worker below full retirement age who is insured under Social Security;
2. An individual disabled since childhood (before age 22) who is also a) a dependent of a worker eligible for disability benefits; b) a dependent of a worker eligible for retirement benefits; or c) a dependent of a deceased parent who was insured under Social Security while they were alive.
3. A widow or widower over age 62, or who is caring for a deceased spouse's disabled child, or child under age 16, whose spouse was insured under Social Security while they were alive.

Once approved, disability benefits for workers usually start 5 months after the onset of the disability.