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How Do We Book the Right Number of Agency Staff for Each Shift When the Production Plan Keeps Changing?

Food factories book agency labour by phone the day before, from a plan that has since changed. We build crewing that works out shift needs from the line plan.

Updated 3 min readBy SpiderHunts Technologies

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Quick answer — TL;DR

Agency staff are booked by the shift manager ringing the agency the afternoon before, based on a rough view of the plan, so shifts end up over or under crewed. We build a crewing tool that reads the production schedule, works out how many people each line needs on each shift, subtracts your own staff on the rota, and produces the agency request with the right numbers and skills.

Four o'clock, and the agency wants numbers

The agency needs tomorrow's numbers by four. The shift manager looks at the plan, remembers that line 3 needs extra packers for the multipack run, checks who is off from the rota on the wall, and rings through a number. At nine that evening an order is amended and the multipack run moves to Thursday.

The next morning there are six agency workers with nothing to do on one line and a short crew on another. The agency is paid either way.

Why crewing does not follow the plan

How many people a line needs depends on what it is running. A tray-sealing run might need a different crew from a flow-wrap run on the same line. That knowledge lives with the shift managers, and it is not written anywhere the plan can use.

  • Crewing per product and line is remembered, not recorded.
  • The rota of your own staff is a separate spreadsheet or wall chart.
  • Holidays and absence are known to HR but not to the planner.
  • Plan changes after the agency cut-off are not passed on.
  • Agency staff skills and inductions are tracked by the agency, not you.

The cost of guessing

Agency hours paid for people standing about. Lines running slow because they are short. Overtime offered at the last minute. Agency workers sent who have not been inducted on the line they are put on, which is a problem for your own procedures. And shift managers spending their afternoon on the phone.

The crewing tool we build

  1. Your operations team records the crew each product needs on each line, by role, such as operator, packer or hygiene.
  2. The production schedule for the coming days is read from your scheduling tool, ERP or planning spreadsheet.
  3. Your own staff rota, holidays and known absence are brought in from your HR or rota system.
  4. The tool works out, shift by shift, how many people each role needs and how many of your own staff are available, and the gap is the agency requirement.
  5. The agency request is produced with numbers by role and any line inductions required, and sent to the agency by email or through their portal.
  6. When the plan changes, the tool shows the new requirement and the difference from what was booked, so the shift manager can adjust with the agency straight away.
InputHeld by
Crew per product and lineOperations
Production schedulePlanning
Own staff rota and absenceHR or rota system
Agency workers' inductionsRecorded when completed on site

The shift manager still makes the booking. The tool gives them the right number to start from.

What shift managers get back

The afternoon phone call becomes a check and a send. Plan changes produce a clear adjustment rather than a surprise the next morning. Over time, the tool shows agency hours against the plan by line and shift, which helps when deciding whether to recruit permanent staff.

Inductions stop being a surprise too. Because the tool knows which line each agency worker is going to, it can list the ones who have not yet been inducted on that line, so the supervisor knows before the shift starts rather than at the line side.

HR sees the same picture. Where the tool shows the same agency roles filled week after week on the same shifts, that is a conversation about permanent contracts with real numbers behind it.

Signs your crewing is guesswork

  • Agency numbers are phoned in from memory.
  • Crews stand idle on one line while another is short.
  • Plan changes after the cut-off are not passed to the agency.
  • Crewing per product is known only to shift managers.
  • You cannot see agency hours against the plan.

FAQ

Frequently asked questions

The questions readers ask us after this guide.

Still have a question?

Ask us directly — a senior engineer will get back to you.

Ask about your project

Does it replace our agency?

No. It gives you better numbers to send them. How you work with the agency is unchanged.

Can it connect to our rota system?

Where the rota or HR system has an API or export, yes. If the rota is a spreadsheet, we can read that too.

Does it track right-to-work or pay?

No. Those stay with the agency and your HR process. We only handle numbers, roles and inductions on site.

What does the cost depend on?

The number of lines and roles, where the plan and rota are held, and how the agency takes bookings.

Keep reading

More on Problems We Solve

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