Here in Southplanet, a first aid certification remains valid for 3 years. So each time I have done it, it's been with a different set of
CPR protocols...
Now OH&S regs here require a first aid kit in any workplace, the more people the more stuff (mostly in terms of quantity and perhaps one or two things not needed in small ones) needed.
By law, a workplace with 25 or more employees must have trained first aid personnel.
For a workplace with more than 200 employees or a construction site with >100 bods, a first aid room is required and is to be overseen by a person with an occupational first aid certificate, an ambulance officer (
level 3 or above), a registered nurse or a medical practitioner.
This all from the
Occupational Health and Safety Regulations 2001 (New South Wales), clause 20.
Essentially the rule is that if you need first aid, you seek it from a first aider in the spirit of CYA since they in theory know what they are doing... They are also subject to a significant degree of legal protection so long as the injured party consents, was unconscious or fading in and out of consciousness...
Many awards also make provision for a fiscal first aid allowance for first aiders performing that function for their employer.