Peak season has a way of arriving faster than any operations calendar predicts. Whether you are bracing for Black Friday, the pre-Christmas rush, January returns or a summer promotion spike, the warehouses that cope best are the ones that started planning in the quiet weeks beforehand. By the time order volumes double, it is too late to hire, train and rearrange racking. The groundwork has to be done while the site is still calm.

Start with last year's numbers, not guesswork

Before you commit a single pound to extra resource, dig into what actually happened during your previous peak. Most warehouse management systems will give you pick rates, despatch volumes, error rates and hours worked per shift. Pull those figures and look for the pressure points.

• Which days and hours saw the longest queues at packing benches?
• Where did stockouts or overstock slow pickers down?
• What percentage of orders required manual intervention?
• How many agency staff did you bring in, and how long did they take to become productive?

If your data is patchy, ask supervisors and team leaders directly. They remember the Friday afternoon when the conveyor jammed and the carrier cut-off was missed. That kind of detail is worth more than a spreadsheet full of averages. Use it to build a realistic forecast rather than an optimistic one.

Plan labour early, and train before you need it

Recruiting temporary staff in December is expensive and unreliable. Start conversations with agencies in September, or earlier if your peak is unusually large. Better still, build a pool of returners: people who worked last peak, know the layout and can be onboarded in days rather than weeks.

Training is where many operations come unstuck. A new picker who has had two hours of shadowing will be slower and more error-prone than one who has had a full week of practice before the rush. Consider running refresher sessions for existing staff too, particularly on any system upgrades or new processes introduced since last year.

• Stagger shift start times so the site does not bottleneck at the clocking-in terminals.
• Pair experienced pickers with new starters for the first few shifts.
• Write simple one-page guides for packing, labelling and returns, laminated and left at each station.
• Confirm your agency workers understand health and safety rules, not just picking targets.

Bear in mind that peak weeks overlap with school holidays and seasonal illness. Build in a buffer, even if it feels wasteful in October.

Make room for stock before it arrives

Storage space is usually the first thing to run out. Inbound deliveries bunch up, pallets get double-stacked in aisles, and pickers waste time navigating around obstructions. Weeks before peak, walk the site and identify every square metre you can reclaim.

• Clear out dead stock, obsolete packaging and equipment awaiting repair.
• Review slow-moving lines and consider moving them to higher racking levels.
• Reserve a defined bulk area for fast-moving peak lines near despatch.
• Check that your racking is inspected and safe before loading it more heavily than usual.

If you genuinely cannot fit everything, consider short-term overflow space nearby, or negotiate with suppliers to stagger deliveries. A third-party storage arrangement for slower lines can free up valuable pick faces. Just make sure the transfer costs do not outweigh the time saved.

Also think about your goods-in process. A dedicated receiving lane, clear signage and a booked delivery slot system will stop vehicles queueing on the yard and drivers waiting for hours.

Set up packing stations that can flex

Packing is often the hidden constraint. Adding pickers does nothing if every parcel still funnels through four benches. Map out your despatch flow and identify where you can add temporary stations without blocking fire exits or walkways.

• Standardise each bench so any member of staff can use it without hunting for tape or labels.
• Keep consumables replenished by a runner rather than having packers leave their station.
• Pre-build the most common box sizes and have them within arm's reach.
• Position printers and label dispensers to avoid twisting and reaching.

Where possible, separate simple single-item orders from complex multi-item ones. A quick-lane for straightforward parcels can dramatically reduce average despatch time. If you handle returns, designate a distinct area for them so they do not clog the outbound flow.

Test systems and review safety before the rush

Technology failures during peak are painful and public. Run a full test of your warehouse management system, carrier integrations, label printers and scanners in advance. Simulate a busy day: process a batch of dummy orders, print labels, manifest a collection and check that tracking updates correctly.

• Confirm your internet and power backup arrangements are sound.
• Check that carrier collection times and cut-offs match your despatch capacity.
• Have a manual fallback process documented in case systems go down.
• Brief everyone on who to contact when something breaks, and how.

Safety deserves equal attention. Busier sites mean more forklift movements, more people on foot and more fatigue. Refresh risk assessments, check aisle markings, replace damaged racking and make sure pedestrian routes are clearly separated. Fatigue causes accidents, so monitor overtime and enforce breaks, even when the pressure is on.

Finally, communicate. Daily huddles during peak, even five minutes at shift start, let you flag problems early and adjust resource before small issues become bottlenecks. A warehouse that plans calmly in advance tends to stay calm when the orders flood in.