RT Journal Article SR Electronic T1 Workplace Presenteeism, Job Substitutability, and Gender Inequality JF Journal of Human Resources FD University of Wisconsin Press SP 1435 OP 1457 DO 10.3368/jhr.1121-12014R2 VO 60 IS 4 A1 Azmat, Ghazala A1 Hensvik, Lena A1 Rosenqvist, Olof YR 2025 UL http://jhr.uwpress.org/content/60/4/1435.abstract AB This work explores how the parenthood wage penalty is partially explained by an increased within-couple gap in job uniqueness (that is, the within-establishment substitutability of workers). Uniqueness is rewarded with higher wages, but it requires worker presenteeism (that is, the lack of unpredictable work absences), which entails a higher cost of childbearing. Using a within-couple event study approach, we show that after the arrival of the first child, women take more days of absence than men, and their likelihood of holding jobs with low substitutability decreases. We find that 15 years after childbearing, the male–female gender gap in holding a (higher-paying) unique job increases by six percentage points. The results suggest that structural changes towards greater work flexibility, making it less costly for workers in unique jobs to not be present, can help to reduce the parenthood wage penalty.