In Health Benefit Strategy I believe this falls under one of the numerous functions of the HR Practitioner to see to it that an operational Health Scheme exists in the workplace.
For instance the HR is expected to get Managements approval of hospitals/clinics with which to register employees, most times they are usually close to employees residences or workplace this is highly dependent on individual employee's discretion/choice.
Secondly the one I know of here in my country a given percentage is contributed on behalf of each employee based on status and paid to an Health Management Organization who eventually pays to the hospitals where these employees are registered with.
It should be noted quickly that employees are entitled to register their spouse and two kids alongside themselves at the point of initial documentation.
Thirdly, the advantage here is that the money is a pool of funds hence employees find out that they can enjoy almost unlimited medical treatment as long as the complaints are sincere and medically confirmed.
Above all it usually adviced that employers of labour get their employees registered with reputable hospitals or health clinics just in case of emergencies and at the same time in extreme cases to avoid litigation especsially in ill-health/harzard prone work environment.