ɪɾ ɪz ðə lˈɑːɹdʒɪst tɹˈeɪd jˈuːniən ɪn nˈɔːɹðɚn ˈaɪɚlənd, wɪð ɚɹˈaʊnd fˈoːɹɾi sˈɪks,zˈiəɹoʊzˈiəɹoʊ zˈiəɹoʊ mˈɛmbɚz, ænd ɪz ˈɔːɹɡɐnˌaɪzd ˌɪntʊ tˈuː ɡɹˈuːps, ðə sˈɪvəl sˈɜːvɪs ɡɹˈuːp, fɚðə stˈæf ʌv pˈʌblɪk bˈɑːdiz ɛmplˈɔɪd ˌɔn sˈɪvəl sˈɜːvɪs tˈɜːmz ænd kəndˈɪʃənz, ænd ðə pˈʌblɪk ˈɑːfɪsɚz ɡɹˈuːp, fɔːɹ ɛmplˈɔɪiːz ʌv ˌɛdʒuːkˈeɪʃən ænd lˈaɪbɹɛɹi bˈoːɹdz, hˈɛlθ ænd sˈoʊʃəl sˈɜːvɪsᵻz bˈoːɹdz, ðə nˈɔːɹðɚn ˈaɪɚlənd hˈaʊzɪŋ ɛɡzˈɛkjuːtˌɪv, dˈɪstɹɪkt kˈaʊnsəlz, ˈʌðɚ pˈʌblɪk bˈɑːdiz ænd vˈɑːləntɚɹi ˌɔːɹɡɐnəzˈeɪʃənz.
It is the largest  trade union in Northern Ireland, with around 46,000 members, and is organised into two groups, the Civil Service Group, for the staff of public bodies employed on civil service terms and conditions, and the Public Officers Group, for employees of education and library boards, health and social services boards, the Northern Ireland Housing Executive, district councils, other public bodies and voluntary organisations.