I tried looking for the information on their site, needless to say I could not find it. But I am 95% sure I read it a couple of years ago.
Page 56 of this report talks about enabling "persons without full PRSI contributions to retrospectively buy PRSI contributions"
http://www.socialinclusion.ie/documents/ConsultationReport2006-2008.pdf
This might also be of interest: Guide to voluntary contributions - SW 8
http://www.welfare.ie/publications/sw8.pdf
Towger
Page 56 of this report talks about enabling "persons without full PRSI contributions to retrospectively buy PRSI contributions"
http://www.socialinclusion.ie/documents/ConsultationReport2006-2008.pdf
This might also be of interest: Guide to voluntary contributions - SW 8
http://www.welfare.ie/publications/sw8.pdf
Towger