Nurse Staffing Continuity: The Metric Your Fill Rate Misses

There’s a conversation I have with nurse leaders so often that I could almost finish it for them. It comes up at conferences, during calls, and in the hallway after meetings.

“The schedule says we’re covered,” they tell me. “But it doesn’t show what it took to get there.”

I worked on the floor for several years and know what they’re describing. A schedule can look fine while managers and charge nurses are still working to keep it that way. Most of the effort never appears in a staffing report.

Nurse leaders have told me their managers spend 40 to 60% of their time, sometimes more, making staffing decisions and filling gaps. House supervisors carry much of that load during their shifts, managing patient flow and responding to changes across the hospital.

A unit can start the evening adequately covered and look very different a few hours later. A call-off, a wave of admissions, or a change in patient acuity can create a staffing need that didn’t exist earlier in the day.

Now someone has to find an available clinician who's qualified for the assignment, familiar with the unit, and eligible to work additional hours. In many hospitals, that still means calls, texts, and emails while the unit waits.

Sometimes the answer is a costly last-minute incentive. Sometimes nurses already on the unit absorb the extra work until help arrives. The final fill rate captures the outcome, but not the calls, incentives, extra work, or strain that went into it. It also doesn’t show whether the clinicians filling those shifts are becoming familiar with the unit.

That’s why nurse staffing continuity matters. It adds another layer of visibility to what fill rate alone can’t show.

Why Nurse Staffing Fill Rate Isn’t Enough

From a CNO’s perspective, there’s more to understand about a shift than whether it was filled. A unit with high-acuity patients and several new graduates may need more support than a unit with the same number of nurses and a more experienced team. Both can show 100% on the staffing report.

The people behind the number matter, too. Are they clinicians who know the unit, or are they walking in for the first time?

Consider two units with the same fill rate. Both use qualified, oriented per diem nurses. On one, most have worked the unit many times. On the other, several are there for the first time.

The charge nurses are walking into very different shifts, but the staffing report doesn’t show it.

A returning clinician already knows the unit, its routines, and the people they can turn to when something changes. As a result, the charge nurse spends less time helping them navigate the environment and more time managing the shift.

Most CNOs can see whether a shift was filled. Seeing how often the same clinicians return to a unit takes more work. Some of that information sits in the scheduling system. Some lives with the manager or charge nurse, who knows who has worked the unit before, who tends to return, and who needs more support.

For a CNO looking across the organization, the opportunity is to bring that unit-level knowledge into the staffing picture. Which units are building a familiar, returning workforce, and which are repeatedly starting over with new clinicians?

How Nurse Staffing Continuity Affects Unit Workloads

I remember what shift change feels like when the incoming nurse has never worked the unit. You give the patient report, then spend a little more time explaining how things work there.

Where do they find what they need? Who do they call? Is there something about a patient who has been there for a week that the chart won’t make obvious?

These questions come up as everyone tries to finish report and start the next shift. If the unit is busy, the charge nurse and the rest of the team keep answering them throughout the shift.

The extra work spreads quickly. The outgoing nurse may stay late to make sure the incoming nurse has what they need. The charge nurse becomes the person everyone turns to for questions about the unit while also managing assignments, admissions, and everything else happening around them. Other nurses step in when they can.

A qualified, oriented nurse can still need that support during the first few shifts. Every unit has unique routines, people, and ways of working. Learning those details takes time, and the team often provides that education while caring for patients.

A nurse who returns to the same unit brings some of that knowledge with them. They know where to find the things they don’t use every day. They know who to call when they need help. They understand how the team works together when several things happen at once.

Over time, they also learn about the patients and families who return, as well as the details that matter to them. Orientation gives a nurse the foundation. Familiarity grows through experience with the unit and the people on it.

When I talk with leaders about continuity, they often return to its impact on their teams. Charge nurses and staff absorb the extra questions and support. When that happens shift after shift, it adds to an already demanding workload.

Leaders are watching patient care closely, too. When a team spends less time helping someone learn, the unit has more time and attention for the patients in front of them. For me, that’s where continuity becomes an operational issue, not just a staffing preference.

How Per Diem Nurse Staffing Can Support Continuity

Flexibility and continuity can work together. External clinicians can be an important part of a strong workforce model if they can build familiarity with the units where they work.

Some CNOs hear “nurse staffing continuity” and assume it means giving up flexibility. It doesn’t have to.

We used to think of per diem as someone picking up a few shifts a month and travel contracts as the answer when a hospital needed steadier coverage. Plenty of clinicians want substantial hours while still choosing the days that work for them.

A strong model starts with a hospital’s staff and internal pool. A local pool of qualified per diem clinicians can extend coverage from there. Those clinicians can complete orientation once and continue returning to units where they already know the environment.

The nurse gets flexibility. The unit benefits from familiarity. That’s the balance continuity should support.

A nurse who returns learns how a particular team works and what its patients need. A clinician working a single shift has far less time to build that familiarity, regardless of their clinical skill.

When I push leaders on this, many do see a tension, and I understand why. They remember per diem as the last call after everything else had been exhausted. They didn’t know who was available, who was qualified for the unit, or whether they could reach anyone in time.

Managing a large per diem pool that way was exhausting. Much of the pushback I hear comes from how difficult per diem was to manage, not from the clinicians themselves.

The challenge I see today is sustaining relationships with clinicians who already know the organization and want flexibility. Travel contracts can cover an ongoing need, but the end of every assignment can also mean starting over with someone new.

Why Hospitals Struggle to Build More Nurse Staffing Continuity

Nurse leaders already recognize the value of bringing good clinicians back. When someone works well on a unit, they ask for that person again, request another assignment, or explore a permanent role. Sometimes they offer more pay or a sign-on bonus.

The clinician may want to keep traveling. A strong per diem nurse may want to preserve flexibility. The leader may simply want a reliable way to keep working with someone who already knows the unit. This is where the process often breaks down.

A manager may know exactly whom they want back, but finding them again can be difficult. They may have to ask an agency about availability or piece together who has worked the unit, who is oriented, and who can take the next shift. The knowledge exists, but it often lives with individual managers and charge nurses rather than in a repeatable staffing process.

Leaders ask me about fill rate, and they should. But fill rate depends on context, including the size of the internal workforce, orientation capacity, and the number of qualified clinicians available locally.

A hospital that orients one or two clinicians a month operates differently from one that can orient many more. Comparing fill rates without context can miss what’s happening underneath the number.

The same is true of the clinicians behind the fill rate. Once a unit invests the time to orient someone, nurse leaders want to know whether that relationship continues. If a clinician doesn’t return, they want to understand why. Was the experience positive? Were the assignments reasonable? Could they pick up shifts that fit their schedule? And of the flexible clinicians a unit oriented and brought in, how many came back?

If I could add one staffing number to a CNO’s quality dashboard, return rate would be high on my list. It gives leaders a practical way to see whether continuity is taking hold at the unit level. I’d want to see it by unit, not just across the hospital. A healthy hospital-wide return rate can mask a unit that keeps starting over with new clinicians.

Like fill rate, return rate needs context. It can still reveal something fill rate can’t: whether units are building a pool of clinicians who know the environment and choose to come back.

Much of this information already exists at the unit level. Managers and charge nurses know which clinicians have worked the unit, who tends to return, and who needs more support. The challenge is bringing that knowledge into a staffing view CNOs can see across the organization.

Measure Nurse Staffing Continuity With Return Rate

A filled shift tells you the schedule was covered. It doesn’t tell you whether the nurse had worked on the unit before, whether they’ll come back, or what it took to get them there.

Pick a unit that regularly needs extra coverage and look beyond its fill rate. Track how often nurses return, how much orientation they need, and how much time and money managers spend finding the next person. Are you building a reliable pool of clinicians who know the unit, or starting from scratch every time?

I hear the same story from nurse leaders almost everywhere I go. They can tell me how many shifts they filled, but they often can’t tell me how many of those nurses came back. How many of the nurses covering your open shifts today will come back for another one?

About the Author

Kelley Strandberg, ShiftMed VP of Nursing and Workforce Innovation, brings a nurse-first perspective to workforce innovation, specializing in helping health systems build more sustainable staffing models and reduce reliance on costly travel labor.

She partners with hospitals and health systems to strengthen operational efficiency through flexible workforce strategies grounded in real clinical and staffing experience.

A former inpatient nurse, Kelley understands the realities of care delivery firsthand. She previously led client solutions at Intellify and held leadership roles at AMN Healthcare focused on per diem, travel, and crisis staffing.

Her work sits at the intersection of clinical insight and workforce strategy, helping nurse leaders build staffing approaches that are practical, scalable, and built for today’s demand pressures.

Related Nurse Staffing Content

• Nurse Staffing Contingency Plans: From Schedule Build to Hour 0

• How CNOs Can Predict Workforce Strain Before It Impacts Nurses and Patients

• Why Your Nurse Staffing Strategy Is Creating Flexibility Without Stability

• Proactive PTO Planning for Nurse Leaders: Ensuring Care Consistency During Vacation Season