Yes, it is a great benefit since she worked for the government, in case of private companies and those who never worked, only receive the benefit of the Social Security pension. Besides, if they want to pay a private insurance as some private companies do, it would be two benefits.That's awesome that your mother earned in three places after bowing out from work. Some countries adopt such methods, while some countries it isn't like that. Unless the individual seeks for insurance during the working days. Then after active service years, the insurance will surely pay what it is written in consensus with the individual.