We analyzed risk associated with exposure to pesticides and contact with livestock in 277 multiple myeloma (MM) cases and 2434 controls who participated in the multicentre European EPILYMPH study. Ever exposure to organic pesticides or contact with any species of livestock was not associated with an increase in risk of MM. However, risk associated with ever exposure to pesticides was elevated after adjusting for contact with sheep (OR= 2.0, 95% Cl 1.2 3.3). The finding of an excess risk associated with ever exposure to any pesticides after adjusting for contact with breeding animals is most likely due to chance. © PI-ME, Pavia 2011.