Visa requirements are your responsibility.  As the relationships between countries change, the laws governing travel between countries change also.  It is 100% your responsibility to research the visa requirements for your stay abroad.  

Some questions you will want to consider: 

What passport do I hold and what relationship does my country have with the country I wish to visit?

Do I need a work visa?  

Perhaps if you are volunteering, or not being paid, you may not require a work visa. Should I enter the destination country as a student or a tourist or a "worker"? 

The answers to these questions and the guidelines of how to obtain a visa, should you need one, can be found at:

Warning: the process can be slow and frustrating, so BEGIN EARLY - it always takes longer than you think it will.

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