The Occupational Safety and Health Administration (OSHA) has rules that limit workplace exposure to blood and other body fluids.

The regulations cover all employees who could be "reasonably anticipated" to come into contact with blood and other potentially infectious substances on the job.

While OSHA's rule was initially aimed at employees of hospitals, emergency response personnel, correctional facilities, law enforcement agencies, and funeral service workers, the blood borne pathogens rule should also be brought to the attention of any designated first aid or health care providers in your workplace.

OSHA does not consider "good Samaritan" acts like helping a co-worker with a nosebleed, as an instance of occupational exposure, but what about the employees you have paid to be trained in first-aid?

If you have designated someone to administer first aid in your workplace, the blood borne pathogen standard applies -- meaning: you must have a detailed exposure control plan.

Many companies already require employees to wear disposable gloves and other protective apparel if there is a chance that they may come in contact with materials that may be contaminated with infectious blood borne substances or fluids.  Do not allow employees to find excuses for not wearing those things.