Most employers will want a first aid certificate issues by an accredited training provider. Each country / area will have different rules about this so make sure you check your local procedures.
Do not claim to have an authorised first aid qualification. This is dishonest and could affect your job application chances.
John Furst
JOHN FURST is an experienced emergency medical technician and qualified first aid and CPR instructor. John is passionate about first aid and believes everyone should have the skills and confidence to take action in an emergency situation.