Drawing on the Quarterly National Household Survey (QNHS), this paper examines changes in the proportion of people aged over 50, active in the Irish labour market from 1998 to 2014. Results indicate that an increasing number of workers over 50 remain active, due mainly to the dramatic increase in the proportion of older females remaining in the labour force. By 2014 the 50 to 64 age group accounted for a quarter of all economically active people in the labour market between 15 and 64. Older workers are more likely to be employees and less likely to be employers or self-employed in 2014 compared to 1998. Older workers in lower-level occupations, particularly over the age of 60, are more likely to remain economically active. Level of education is strongly associated with the likelihood of older workers remaining economically active, particularly for the 50-59 age group and for females.