Proposals on BS 45004: https://standardsdevelopment.bsigroup.com/projects/3a879651ac6d2e245e7c31aa0efebab9

Public Comments start date: 2017-03-13
Public Comments end date: 2017-05-24
2017-05-06: The text seems not to be accessible.

See also: http://blog.psybel.de/stichwort/iso-45001-english/

I don’t know whether any 45004 standard will be necessary. As far as I understand, ISO 45001 already will include guidelines.

An incident based on OHSAS 18001:2007 is an incident in which
※ physical ill health (regardless of severity) occurred,
※ physical ill health (regardless of severity) worsened,
※ physical ill health (regardless of severity) could have occurred,
※ physical ill health (regardless of severity) could have worsened,
※ mental ill health (regardless of severity) occurred,
※ mental ill health (regardless of severity) worsened,
※ mental ill health (regardless of severity) could have occurred,
※ mental ill health (regardless of severity) could have worsened,
※ injury occurred,
※ injury could have occurred,
※ fatality occurred,
※ fatality could have occurred.

An incident based on ISO/DIS 45001.2:2017 is an occurrence arising
※ out of work or
※ in the course of work
that
※ could or
※ does
result in
※ injury and/or
※ ill health (regardless of severity)
which both are an adverse effect (including occupational disease, illness and death) on the
※ physical,
※ mental or
※ cognitive
condition of a person.

Google: “conitive ill health”