The 168-Hour Front Desk: How to Work Out What Your Phone Coverage Actually Costs

Start with the real number, not the posted one

A week is 168 hours. A practice open 9 to 5 on weekdays posts 40 — but posted hours and covered hours are different things, and the gap between them is where the argument lives.

Subtract lunch, if the phone genuinely goes unanswered through it: five hours. Subtract the stretches when everyone is with a patient and the phone rings out. Subtract the days someone is off and nobody backfills the desk. What's left is coverage, and for most practices it lands closer to 35 hours than 40 — roughly a fifth of the week.

The other four-fifths is not idle time. It is the time your number is still being dialled.

Count the gap in the four places it actually falls

Missed calls aren't spread evenly. They cluster, and each cluster behaves differently:

• After close. The largest block by hours, and the one where callers are most likely to be researching rather than rescheduling — which makes them new-patient enquiries more often than not.
• Weekends. Two full days. A voicemail left Saturday morning is answered Monday, by which point the caller has had 48 hours to call someone else.
• Lunch and busy stretches. Short, frequent, invisible. Nobody logs them, so they never appear in a report.
• Overflow. Two calls at once means one of them waits, and a caller who was already choosing between practices does not wait.

Only the first two show up as voicemails. The other two mostly show up as nothing at all — which is why practices consistently underestimate them.

Put a number on it — using your figures, not ours

The arithmetic is deliberately simple, because a complicated model is a model you can't check:

• Missed calls per week — from your phone system's logs if it keeps them, or a fortnight of counting if it doesn't.
• × 4.33, to get a month.
• × the share you'd expect to book if someone answered. Be conservative; a third is a defensible starting point and you can move it.
• × the average value of a booking at your practice.

Every input is yours. The result is an estimate of what the uncovered hours are costing, and it is worth exactly as much as the numbers you put in — which is the point. A figure you built yourself is one you'll act on.

Two honest caveats. Some missed callers ring back, so not every missed call is a lost booking. And some who reach voicemail leave one. Both push the number down; neither pushes it to zero.

Then compare like for like

Once you know the gap in hours and in dollars, the options become comparable — which they aren't while the gap is a feeling.

Another receptionist adds one shift, five days, minus lunch, breaks and leave. The U.S. Bureau of Labor Statistics put the median receptionist salary at $38,010 a year in May 2024, before payroll taxes, benefits, and the cost of rehiring. It is the most capable option per hour and the most expensive per hour of coverage.

An answering service covers the hours cheaply and usually returns a message rather than a booking — so the callback work lands back on your staff, and the bill scales with the months you're busiest.

Self-serve AI software has a low sticker price and a real cost in your hours: writing the prompts, testing, monitoring calls, fixing odd behaviour, keeping it current. That work doesn't end.

A managed service prices the whole thing as one monthly rate. Whether that's the right answer depends on the gap you just measured — which is why measuring it first is the actual advice here.

See your own week, hour by hour

The coverage clock takes your real opening hours and colours in all 168 — the covered ones and the dark ones. Nothing is stored, and it takes about a minute.

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