Document authentication

Learn what document authentication is and why it matters

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The basics of document authentication

Documents to be used in a foreign country, especially for the process of obtaining a work visa, will need to be legalized or authenticated in the country they were issued. If the country you will be going to is part of the Hague Convention of 1961, your documents will require an apostille at the state and/or federal level. Countries that are not part of the Hague Convention of 1961 will go through similar initial steps, however, will require further legalization at the country’s embassy 

The document authentication process can be complicated, time-consuming, and stressful, especially if you do not live by a consulate or are trying to navigate the process while already abroad. Requirements can vary depending on country, city, and employer, so if you plan to do this process yourself, be sure you know the requirements of your employer beforehand and follow your state or country’s process.    

Teaching Nomad is here to help! Our document authentication team saves you the headache of figuring out this process and the vocabulary and nuances that come with it. Our service is reliable and comprehensive, and we ensure that your documents are done properly! Leave it to the experts and let us make your life easier!

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If you need to get your authenticated documents ordered as soon as possible, please fill out our order form. We will get back to you with a price quote and an expected timeline for your document processing.

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Understanding the terminology

Authentication, legalization, & attestation

The words authentication, legalization, and attestation are often used interchangeably or according to country but is the standard process for countries not party to the Hague Convention. At the most basic level, these countries require further legalization at the embassy. The process is multi-step and could include any or all of the following steps: notarization, county/state/federal authentication, and finally, embassy legalization.


An apostille is obtained at the state or federal level and is the standard process for countries party to the Hauge Convention. Once notarized (if necessary) and apostilled, the document does not require further legalization/authentication at the embassy.

Learn more about the authentication/apostille process in different countries:

South Korea


Need document legalization or an apostille for a country not listed?

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