Hello,

here is a link to a site that outlines benefits https://www.imsm.com/gb/news/10-benefits-of-iso-45001-business/

The ISO website gives some useful info https://www.iso.org/obp/ui/#iso:std:iso:45001:ed-1:v1:en

If you come from the angle of reduction in costs from reduced insurance premiums, better approach working reducing accidents and subsequent costs etc. Increases the liklihood of attracting clients and greater tendering opportunities e.g. some clients will only use companies if they have a management system certificated to ISO. MD's like to save money and attract new business. I hope that helps a bit.