The study Ross cited was: Milligan-Saville, J. S., Tan, L., Gayed, A., Barnes, C., Madan, I., Dobson, M., ... & Harvey, S. B. (2017). Workplace mental health training for managers and its effect on sick leave in employees: a cluster randomised controlled trial.The Lancet Psychiatry, 4(11), 850-858.
The book Owen recommended was Turn the Ship Around! by L. David Marquet, available at: https://www.amazon.co.uk/Turn-Ship-Around-Building-Breaking/dp/1591846404
The book Ross recommended was The Consolations of Physics by Tim Radford, available at: https://www.amazon.co.uk/Consolations-Physics-Wonders-Universe-Happy/dp/1473658160