Final answer:
The main purpose of international Social Security agreements is to eliminate dual Social Security taxation for workers who work across international borders. These agreements provide a framework for taxation that ensures workers only pay into one country's Social Security system, avoiding unfair double taxation.
Step-by-step explanation:
The main purpose of international Social Security agreements is to eliminate dual Social Security taxation, which occurs when a worker from one country works in another country and both countries require the worker to pay Social Security taxes on the same wages. These agreements ensure that the worker only pays Social Security taxes to one country, which helps maintain the coverage and benefits rights without negatively affecting the worker's Social Security funds.
International Social Security agreements are similar to other international agreements which might serve to counteract domestic special interests and prevent protectionist measures. Social Security itself is a form of pension intended to act as a social safety net for individuals as they age, helping them to save for retirement and providing monthly benefits once they retire.