EU regulations on social security provide for the protection of the social security rights of workers who are or have been employed or self-employed in more than one member state. One of the main ways in which the regulations provide for this protection is through the aggregation of periods of insurance completed in the member states where a person has worked for the purposes of meeting the contribution conditions for entitlement to benefit. All the periods of insurance completed in the other member states are treated as if they were completed in the state where the claim to benefit is made.
To qualify for the short-term benefits, such as unemployment and disability, a claimant must generally have been lastly insured in the state of claim and have sufficient contributions paid or credited over a relatively short period. If they qualify for these benefits, even on the basis of aggregation, the full amount due is paid by the state of last insurance. Many claimants who have previously worked abroad, however, would already have completed sufficient periods of insurance in Ireland after their return to qualify for benefit, without recourse to the periods of insurance completed in the other state(s).
In the case of long-term benefits such as retirement, old age and widowed persons pensions, entitlement is based on periods of insurance completed over a person's career since entry into insurance. Where a person has been insured in more that one member state, each state works out the level of pension payable by it on a pro rata basis.
The nature of the contribution conditions for pensions in Ireland is such that where there is an entitlement under Irish legislation the pension amount is usually higher than the pro rata amount and, therefore, the award of pension can be made without recourse to the periods of insurance in other states.