Define the outcome before you agree the price

A supplier quotes a price per “filled shift”. Before you compare it with anything, have both sides count the same sample week under their definition. If the counts differ, the prices aren't comparable yet.

What you need is a written definition and a shift-by-shift count you can test before signing. The clause sheet below gives you both. It's a starting point for procurement and legal review, not a contract.

A published example of why the definition matters

As checked on 8 October 2026, Intercom's pricing FAQ lists Fin at $0.99 per outcome. It counts customer confirmation, no further request for help after Fin responds, or completion of a Procedure, including handoffs. Sierra's article dated 10 December 2024 says criteria are agreed upfront and escalated cases usually carry no charge; it adds that routing or greeter-style interactions “may align better with consumption-based pricing” instead. Intercom pricing, Sierra's explanation.

Two vendors, two ways of defining and charging for a result. Neither page is a quote for your purchase, and Sierra's article is almost two years old. Ask for the definition in the offer in front of you.

An agency shift raises the same question. Does “filled” mean booked, turned up, or delivered with the qualification and cover you asked for?

One week can produce four billable counts

Illustrative week: 20 distinct shift requests, each for one worker in a specified role. The stages are nested: the 14 in the last row are among the 15 who completed their shifts, who are among the 16 who arrived, who are among the 18 booked. Replacements do not create extra requests in this example.

At the same fee per unit, billing 14 instead of 18 is four fewer units: 22.2% less than the booking-based bill. That is a difference in the invoice, not an improvement in staffing.

With an assumed €50 fee per shift, the loosest and strictest definitions give €900 and €700, a €200 gap. That is only the outcome fee. Labour charges, taxes, minimum commitments and cancellation fees are separate.

Pick the definition that matches what you need. A booking service can fairly charge for a confirmed booking. If you need a qualified person on the role for the whole shift, ask the supplier to price that. A tighter definition may change the fee, or whether they take the work.

Fill the clause sheet together

Start with one role and one shift pattern. Copy the table into a spreadsheet, fill the last column, and ask the supplier to flag any row they read differently. The examples are negotiating positions, not standard terms or legal requirements.

Don't let a clock-in be the whole acceptance test. It shows attendance. It doesn't show the qualification or continuous cover. Keep those checks separate and tie them together by request ID.

If the supplier can't see your time records, agree what you'll share, who confirms it and when. A definition neither side can evidence isn't ready.

Turn the answers into wording you can challenge

Here is illustrative discussion wording for a full-shift service. Ask your procurement or legal reviewer to adapt it to the agreement and jurisdiction:

One billable filled shift is one accepted request ID for which the agreed role is covered at the agreed site throughout the recorded shift interval, subject to the break and handover arrangements in the schedule. Each person providing cover must meet the listed qualification requirements when performing the work. A booking alone does not meet this definition. Replacements remain under the original request ID and do not create a second billable unit. Partial cover, client cancellations and client-caused access failures are treated under the separately agreed fee schedule. The parties confirm completion from the agreed attendance and qualification evidence and reconcile disputed or missing records through the named contacts and timetable.

It still needs your schedule, fees, evidence sources and dispute timetable. Before accepting it, have both sides run it against a no-show, a late arrival, a missing clock-out and a replacement.

Which count does a replacement belong to?

flowchart TD
  Q[One request, one agreed interval] --> W{Covered the whole interval?}
  W -->|yes, one person| U[One unit, if qualified]
  W -->|no, a gap| G[Partial-cover rule applies]
  W -->|yes, two people back to back| S{Contract allows split cover?}
  S -->|yes| U
  S -->|no| G

Test a replacement and a missing record

Replacement, illustrative: a request needs qualified cover from 7am to 3pm. The first worker leaves at 11am and a qualified replacement starts at noon. Nobody is on for an hour. Under the full-interval wording above that is not one complete unit, even though two people turned up. Apply the agreed partial-cover rule, and don't count two filled shifts.

If the replacement had started at 11am, both people qualified, it could count as one unit if the contract allows split cover and the handover and break conditions are met. That's a term to settle, not a given.

A missing clock-out is a different case. It is missing evidence, not proof that the person left early. Mark it pending, have the named site reviewer reconcile it against the agreed alternative record, and keep the correction and its reason.

Use this small reconciliation record for either case:

Keep the operational record separate from the invoice decision

Fivexer holds rosters, worker skill records and time entries, which can feed the evidence you assemble. It doesn't settle what was billable. Today's skill record doesn't prove what was valid on the work date, and a shift on the rota isn't an approved invoice line.

A spreadsheet of request IDs and evidence references can be enough. The test is whether another reviewer can reproduce your count without guessing which booking or replacement belongs to which request.

Next step: take your last agency week and count it four ways, using the definitions above. Bring the differences and the filled clause sheet to the supplier. If replacements are where your records break down, the shift cover page shows how to pick eligible cover and keep the assignment clear. The contract still decides what's billable.