What counts as competent? A documentary analysis of minimum clinical hour requirements across four health professions in Aotearoa New Zealand

In the training of doctors, nurses, and other health workers, a fundamental question has long guided how students learn: how much time must they spend watching and doing before they are trusted to care for people alone? For decades, health regulators in New Zealand and around the world have answered this by setting a specific number of hours. This idea rests on a simple assumption: that time spent in a hospital or clinic is a reliable measure of skill. The more hours a student completes, the more competent they are presumed to be. This approach is deeply embedded in the rules that govern professional schools, acting as a gatekeeper for public safety. It is a system built on the belief that exposure to real-world practice, measured in time, is the surest path to becoming a qualified professional.

However, a new study from Auckland University of Technology challenges the foundation of this system. The researchers asked a straightforward but difficult question: where did these specific hour requirements actually come from? They wanted to know if the numbers were based on solid scientific proof that links a certain amount of time to a certain level of skill, or if they were simply habits that had been passed down over generations. To find the answer, the team did not conduct experiments with patients or students. Instead, they acted as historians and auditors, digging through the official records, policy documents, and meeting notes of the four main health regulatory bodies in New Zealand: those for nursing, midwifery, physiotherapy, and occupational therapy. They looked for the original reasons why a specific number of hours was chosen in the first place.

The investigation revealed a surprising truth. For nursing and midwifery, the current rules require students to complete at least 1,000 and 2,400 hours of supervised clinical practice, respectively. The researchers found that these numbers were not the result of a scientific study proving that a nurse becomes safe after exactly 1,000 hours. Instead, the records showed these requirements are largely historical. They evolved from old apprenticeship models where long periods of observation were the only way to learn a trade. When the nursing and midwifery councils reviewed their rules recently, they considered lowering the hours or replacing them with different methods, but they kept the high numbers. The decision was driven not by new evidence, but by strong pressure from stakeholders who felt that reducing the time would risk public safety, even though no data existed to prove that the current high numbers were necessary.

In contrast, the story for physiotherapy is different. For many years, physiotherapy students in New Zealand were also required to complete around 1,000 hours. However, the researchers found that the regulatory board for physiotherapy eventually realized there was no evidence to support this specific number. They discovered that the requirement was a "myth" with no scientific basis. Consequently, they removed the mandatory hour count entirely. Today, physiotherapy programs focus on whether a student can demonstrate specific skills and competencies, regardless of how many hours it took to learn them. This shift shows that it is possible to move away from counting time, but it required the regulators to admit that the old rule was not based on proof.

Occupational therapy sits somewhere in the middle. While New Zealand's own rules do not set a strict number of hours, the profession aligns itself with international standards that require 1,000 hours of fieldwork. The researchers found that this requirement exists primarily to ensure that New Zealand graduates are recognized by other countries. It is a rule kept for the sake of global consistency and professional mobility, rather than because local evidence proves that 1,000 hours is the magic number for competence.

The study concludes that across these four professions, the rules governing how long students must train are shaped more by history, international agreements, and the desire to reassure the public than by scientific research. The researchers found very little evidence linking specific hour thresholds to actual competence. They noted that while counting hours is easy to measure and enforce, it does not guarantee that a student has learned the right skills. A student might complete 1,000 hours in a busy hospital but learn very little if they are not supervised well, while another might learn the same skills in fewer hours with better guidance. The current system persists because it is a practical tool for regulators; it is a simple number that everyone understands, even if it does not tell the whole story of a student's ability.

Ultimately, the paper suggests that the health education system in New Zealand is operating on a mix of tradition and caution. The regulators are not ignoring the need for safety; they are prioritizing a system that feels secure and is easy to manage. The study does not claim that the current system is dangerous, but it highlights a gap in knowledge. We do not actually know if the specific numbers we use are the best way to ensure a doctor or nurse is ready to work. The findings call for a future where decisions about training are based on clearer evidence of what makes a professional competent, rather than on the length of time they have spent in a classroom or a hospital ward. Until such evidence is gathered, the old habit of counting hours will likely remain the standard, serving as a familiar, if imperfect, measure of readiness.