It is with great sadness that we announce the sudden passing of Arthur Jacob Hosios on Saturday, November 17th, 2018. Arthur will be sorely missed by his wife Louise Harris, children Ilana and Aaron, brother Leonard, sister-in-law Mona, and nephews and their partners Benjamin and Gemma and Marcus and Terra, sister- and brother-in-law Sharon and Gerald Haberer, nephew Marc Haberer and wife Rebecca Brown and children Sam and Rose, niece Kym Haberer and husband David Phillips and children Ezra and Sahar. Within the past year, Arthur was diagnosed with ALS, and while living with this condition, he died suddenly. Arthur worked for the University of Toronto Department of Economics, where he served as chair for ten years. Both within and outside of academics, Arthur was cherished by those around him. His intelligence, dry wit, and warmth were obvious attributes. He will be profoundly missed by those who loved him. Donations may be made to the ALS Society.