Leave That Never Gets Taken: A Simple Look at Health Staff Shortages in the South Island
News · 2026-08-31 · 5 min read
Staff shortages in New Zealand's health system are often in the news. But a new internal analysis from Health New Zealand's South Island region shows a deeper problem than the familiar call for more nurses. It describes a system that is quietly running on borrowed time. The real size of the staff shortage is hidden behind huge amounts of unused annual leave, unpaid overtime and time-in-lieu that has been put off.
If you work in healthcare, or you hope to work in a hospital overseas one day, this report is worth reading carefully.
Counting Staff Gives Only Part of the Picture
Most stories about staff shortages talk about the number of empty jobs. This one is different. The internal review says the South Island's health workforce has become much smaller over the past four years, and the biggest fall happened in the last twelve months alone.
But the number of staff is only one part of the story. Health New Zealand itself has questioned how reliable that figure really is. A wave of internal restructuring moved many support and public health staff from district payroll systems to national ones. So some of the workers who seem to be missing may never have left the health system. They may simply have been recorded in a different place.
That warning is important. Still, it does not change the most telling part of the analysis: the data on leave and overtime.
Months of Annual Leave Still Waiting
This is the figure that should worry every health leader in the country. On average, a South Island health worker now has around three months of annual leave they have not used. That is nearly double the balance in the next-highest region. It is more than five times the leave held by workers in Northland.
Senior doctors are in an even harder position. On average, they hold close to five months of leave, which is triple the national figure for doctors at their level.
This does not mean people are choosing to skip a generous holiday. It means the workforce simply cannot be spared long enough to take the time off it has already earned. When leave builds up this much, it is no longer a benefit. It becomes what workforce economists call a deferred liability. This is a cost the organisation must pay one day, through payouts, through staff leaving because of burnout, or through both.
Extra Hours Are Now Normal for Nurses
The overtime data shows the same pattern. Together, nurses in the South Island hold a very large overtime balance. They account for most of all the overtime hours recorded in the region. They also hold a separate pile of time-in-lieu that has not been claimed.
These balances have been going down since 2022. However, the internal analysis is very direct about what this means. Overtime has not gone away. It has become a permanent part of how shifts are filled, not a short-term fix for a difficult period.
This difference matters a lot. A system that depends on structural overtime is not just adjusting to short bursts of demand. It is covering a permanent staffing gap with the unpaid or delayed hours of the people already working there.
Admin and Support Jobs Saw the Biggest Falls
Here is a surprising detail. Most of the staff decline was not among nurses, doctors or midwives. The biggest cuts were in administrative, management and patient care-and-support roles. On paper, this may look like the system became more efficient. In real life, the internal review warns, clinical staff are probably now doing coordination and support tasks that other people used to handle. That puts more strain on frontline teams that are already stretched.
The situation is not the same across the whole region. Some districts gained staff during this period. Others, including some of the bigger ones, lost staff. This suggests the pressure is spread unevenly, rather than being one shortage that affects everywhere equally.
A Warning Sign Other Countries Should Notice
Workforce planners often see this build-up of leave and overtime in health systems that are under pressure for a long time. It is a useful early warning for staffing agencies and health authorities far beyond the South Island. When workers cannot take the leave they have earned, the shortage is not a future risk. It is already here. It is just hidden in the payroll records instead of the list of empty jobs.
For organisations that find and place healthcare professionals from other countries, figures like these are a reason to act early, before staff leave because of burnout and make the shortage even worse. Bringing in overseas-trained nurses, doctors and allied health professionals is not only about filling the jobs open today. It also gives a tired workforce space to finally take the leave it is owed, before exhaustion turns into resignations.
What Health Workers Can Take From This
Whatever the final, checked staff numbers turn out to be, the leave and overtime figures are hard to ignore. A workforce with three months of unused leave and overtime built into its rosters is working beyond a safe limit, however the org chart is drawn. For health leaders and the recruitment partners who support them, the question is not whether the pressure is real. It is how fast new staff can arrive before delayed leave turns into a wave of people quitting.
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