If you are going to work in another EU Country, then before you leave you can request a U1 form from the employment service or the social security institution. REQUEST FOR IRISH SOCIAL INSURANCE RECORDS. FORMS E AND U1 (replacement for E form). INFORMATION REQUIRED (BLOCK CAPITALS. Ireland has social security arrangements with other countries. You can use forms E and U1 (formerly E) when claiming sickness. You should fill in the form P50 and send it to your local Revenue tax office along with Parts 2 and 3 of your P45 given to you by your employer. Higher and Further Education. Wed, Jul 25, Your Social Security Rights in Ireland — a Guide for EU Citizens: Citizens Information Centres provide a free, confidential service.