To my knowledge, there is no specific H&S module. It's sometimes referred to separately, like Absence Management is as well. The H&S functionality is the Work Incidents, Disabilities, and Medical Assessments screens. These are all interrelated, such that a Work Incident may require a Medical Assessment, and lead to a Disability. Equally, a Disability at hire may require ongoing Medical Assessments, etc.
Regards,
Peter.