In this paper, we take a fresh look at the magnitude of the trade-off between caring informally for a parent and paid work. We adopt a simultaneous approach with a primary focus on how hours of care are influenced by hours of work rather than the other way round. We also investigate the role that filial obligations play in choices of caring versus working. Using the SHARE data (2004 and 2006) we find that the elasticity of informal care hours in response to working hours is between −0.17 in the caregivers sample and −0.19 in the women-only caregivers sample; small but not negligible.