| Boyle etal.,2004 | European Community Household Survey for Ireland 1994–2001 | Gross monthly wages | Occupation, educational attainment, full-time status, gender, public or private sector, nationality, age, age-squared, permanent/non-permanent job status, length of service with current employer, part-time status and size of enterprise | OLS (with interaction terms) and quantile regressions | 1994: 14.0% | 1994: 10.0% | 1994: 19.5% |
| 1995: 14.6% | 1995: 10.6% | 1995: 19.8% |
| 1996: 14.2% | 1996:9.1% | 1996: 20.6% |
| 1997: 9.9% | 1997: 6.5% | 1997: 14.1% |
| 1998: 13.4% | 1998: 10.9% | 1998: 16.5% |
| 1999: 8.3% | 1999: 5.8% | 1999: 11.1% |
| 2000: 11.0% | 2000: 8.2% | 2000: 13.4% |
| 2001: 12.9% | 2001: 11.4% | 2001: 14.5% |
| | | | | | | |
| Ernst & Young and Murphy, 2007 | National Employment Survey 2003 | Gross weekly earnings | Occupation, educational attainment, full-time status, gender, public or private sector, age, age-squared, permanent/non-permanent job status, length of service, employer, total length in employment, log of overtime hours (38+) worked, log hours worked and full-time dummy | OLS, B-O decomposition, PSM and quantile regressions | OLS: 8% | OLS: 5% | OLS: 10% |
| B–O: 10% | B–O: 7% | B–O: 13% |
| PSM: 10% | PSM: 6% | PSM: 12% |
| | | | | | | |
| Kelly et al., 2009 | National Employment Survey 2003 and 2006 | Gross weekly earnings | Occupation, educational attainment, full-time status, gender, public or private sector, nationality, membership of a trade union, membership of a professional body, experience, experience-squared, permanent/non-permanent job status, log of overtime hours (38+) worked, log of hours worked, shift work and supervisory status | OLS and PSM | 2003 OLS: 14.1% | 2003 OLS: 12.8% | 2003 OLS: 14.9% |
| 2006 OLS: 26.6% | 2006 OLS: 26.6% | 2006 OLS: 26.5% |
| 2006 PSM: 25.9% | 2006 PSM: 22.5% | 2006 PSM:25.2% |
| Foley and Callaghan (2010) | National Employment Survey 2007 | Gross weekly earnings | Occupation, educational attainment, full-time status, gender, public or private sector, nationality, trade union membership, membership of a professional body, age, age-squared, permanent/non-permanent job status, length of service with current employer, total length in employment, log of overtime hours (38+) worked, log of hours worked, shift work, supervisory status and size of enterprise | OLS, B–O decomposition. Both unweighted and weighted results shown | OLS: 10.0%–14.5% | OLS: 7.2%–13.7% | OLS: 12.7%–13.9% |
| B–O: 11.5%–15.9% | B–O: 9.0%–16.6% | B–O: 13.9%–14.9% |
| Results with size of firm excluded: | Results with size of firm excluded: | Results with size of firm excluded: |
| OLS: 15.1%–20.1% | OLS: 12.6%–19.2% | OLS: 18.0%–21.4% |
| B–O: 16.0%–20.5% | B–O: 13.7%–21.3% | B–O: 19.2%–21.2% |
| | | | | | | |
| CSO, 2012 | National Employment Survey 2009 and 2010 | Gross weekly earnings | Occupation, educational attainment, full-time status, gender, public or private sector, nationality, trade union membership, membership of a professional body, age, age-squared, permanent/non-permanent job status, length of service with current employer, total length in employment, log of overtime hours (38+) worked, log of hours worked, shift work, supervisory status and size of enterprise | OLS, B–O decomposition, quantile regressions | | | 2007 OLS: 13.9% |
| 2007 OLS: 13.8% | 2007 OLS: 13.0% | 2009 OLS: 13.7% |
| 2009 OLS: 11.9% | 2009 OLS: 10.4% | 2010 OLS: 12.0% |
| 2010 OLS: 8.5% | 2010 OLS: 5.4% | 2007 B–O: 15.1% |
| 2007 B–O: 12.6% | 2007 B–O: 10.4% | 2009 B–O: 13.9% |
| 2009 B–O: 12.1% | 2009 B–O: 7.1% | 2010 B–O: 12.0% |
| 2010 B–O: 7.3% | 2010 B–O: 3.5% | |
| Results with size of firm excluded: | Results with size of firm excluded: | Results with size of firm excluded: |
| | 2007 OLS: 21.4% |
| 2007 OLS: 20.1% | 2007 OLS: 19.1% | 2009 OLS: 21.1% |
| 2009 OLS: 19.1% | 2009 OLS: 17.2% | 2010 OLS: 20.4% |
| 2010 OLS: 17.0% | 2010 OLS: 14.5% | 2007 B–O: 21.2% |
| 2007 B–O: 18.3% | 2007 B–O: 16.2% | 2009 B–O: 20.3% |
| 2009 B–O: 17.2% | 2009 B–O: 12.2% | 2010 B–O: 18.2% |
| 2010 B–O: 14.1% | 2010 B–O: 10.9% | |
| CSO 2013 | National Employment Survey 2009 and 2010 | Gross weekly earnings (with and without public pension levy deducted) | Occupation, educational attainment, full-time status, gender, public or private sector, nationality, membership of a trade union, membership of a professional body, age, age-squared, permanent/non-permanent job status, length of service with current employer, total length in employment, log of overtime hours (38+) worked, log of hours worked, shift work, supervisory status and size of enterprise | OLS and quantile regressions | 2009 OLS: 13.5% | 2009 OLS: 12.4% | 2009 OLS: 14.2% |
| 2010 OLS: 9.7% | 2010 OLS: 7.0% | 2010 OLS: 12.9% |
| Results with size of firm excluded: | Results with size of firm excluded: | Results with size of firm excluded: |
| 2009 OLS: 21.7% | 2009 OLS: 20.2% | 2009 OLS: 23.5% |
| 2010 OLS: 19.1% | 2010 OLS: 17.1% | 2010 OLS: 22.0% |
| Pension levy deducted from gross pay | Pension levy deducted from gross pay | Pension levy deducted from gross pay |
| 2009 OLS: 4.7% | 2009 OLS: 2.6% | 2009 OLS: 6.2% |
| 2010 OLS: 1.3% | 2010 OLS:–2.0% | 2010 OLS: 5.1% |
| Results with size of firm excluded: | Results with size of firm excluded: | Results with size of firm excluded: |
| 2009 OLS: 11.1% | 2009 OLS: 8.7% | 2009 OLS: 13.7% |
| 2010 OLS: 9.3% | 2010 OLS: 6.3% | 2010 OLS: 12.9% |
| CSO 2017 | Matched Quarterly National Household Survey and Revenue Commissioner's earnings data 2011–2014 | Gross weekly earnings (with and without public pension levy deducted) | Occupation, educational attainment, full-time status, gender, public or private sector, nationality, membership of a trade union, membership of a professional body, age, age-squared, length of service with current employer, log of overtime hours, log of hours worked, shift work, supervisory status and size of enterprise | OLS and quantile regressions | 2011 OLS: 9.2% | 2011 OLS: 3.0% | 2011 OLS: 15.3% |
| 2014 OLS: 5.0% | 2014 OLS:–0.7% | 2014 OLS: 12.2% |
| Results with size of firm excluded: | Results with size of firm excluded: | Results with size of firm excluded: |
| 2011 OLS: 9.5% | 2011 OLS: 3.3% | 2011 OLS: 16.2% |
| 2014 OLS: 5.3% | 2014 OLS:–1.0% | 2014 OLS: 13.5% |
| Pension levy deducted from gross pay | Pension levy deducted from gross pay | Pension levy deducted from gross pay |
| 2011 OLS: 2.9% | 2011 OLS:–3.4% | 2011 OLS: 9.1% |
| 2014 OLS:–0.7% | 2014 OLS:–6.4% | 2014 OLS: 6.5% |
| Results with size of firm excluded: | Results with size of firm excluded: | Results with size of firm excluded: |
| 2011 OLS: 3.2% | 2011 OLS:–3.1% | 2011 OLS: 10.0% |
| 2014 OLS:–0.4% | 2014 OLS:–6.6% | 2014 OLS: 7.8% |
