3PL Checker

3PL special project fees: hourly labor and value-added services

How 3PLs bill special projects, hourly labor and value-added services like labeling and photography, the errors that show up and how to check the hours.

Updated October 29, 2026 4 min read

Special project fees are what a 3PL charges for work outside its standard services: relabeling, inspections, sorting a messy inbound shipment, product photography, building displays and similar one-off jobs. They are usually billed as labor hours times an hourly rate, plus materials, and sometimes at a per-unit rate for common value-added services like labeling. The things to check are that you approved the work, that the hours are reasonable for the job, and that the time increments and minimums match your contract.

These lines vary more than any other charge on a 3PL invoice, because there is no standard quantity to check them against. That makes approvals and time records the main evidence.

What counts as a special project or value-added service

ServiceTypical billingWhat to check
Hourly labor or special projectsLabor hours x hourly rate, plus materialsApproval, hours, time increment, minimums
Labeling and relabelingPer unit, or hourly for large jobsUnit count, label cost, which rate applies
Kitting and bundlingPer kit or per unitKit count against the work order
Inserts and gift wrapPer order or per unitCount against orders that needed it
Product photographyPer SKU, per photo or hourlyNumber of SKUs or photos delivered
Inspections and quality checksPer unit or hourlyUnits inspected, reason for inspection
Inbound problem handlingHourly, for shipments that arrive mislabeled or unsortedWhether the shipment really broke the inbound rules

Some of these have their own rates in the rate card. When a per-unit rate exists for a service, it should normally be used instead of hourly labor, unless the contract says otherwise. Packaging materials used in a project may be billed separately.

How special project fees are calculated

Labor charge = labor hours x hourly rate, where labor hours are rounded to the contract's billing increment and any minimum applies.

Project total = labor charge + materials + any per-unit service charges

Worked example: a relabeling job

Juniper & Pine (a made-up brand) asks Ridgeline Fulfillment (a made-up warehouse) to relabel 1,200 units with new barcodes. Ridgeline's rate card says (all figures made up for illustration):

  • Special project labor: $45.00 per labor hour, billed in 15-minute increments, no minimum
  • Written approval required before work starts
  • Label stock: $0.05 per label

Ridgeline's approved quote is 6 labor hours.

  • Labor: 6 hours x $45.00 = $270.00
  • Labels: 1,200 x $0.05 = $60.00
  • Approved total: $270.00 + $60.00 = $330.00

The invoice shows:

LineCalculationBilled
Special project labor3 workers x 4 hours (4-hour minimum) = 12 hours x $45.00$540.00
Labels1,200 x $0.05$60.00
Total$600.00

The difference is $600.00 - $330.00 = $270.00. The rate card has no minimum, so the 4-hour minimum per worker is not supported, and the 12 hours are double the 6 approved. Ask for the time log. If the job really took longer than quoted, the contract should say whether the warehouse needed to ask before going over.

When a per-unit rate applies

If the rate card also lists "relabeling: $0.20 per unit", that rate may be the one that applies: 1,200 x $0.20 = $240.00 plus labels, rather than hourly labor. Check which rate the contract says applies to this kind of job.

Billing increments

Product photography took 2 hours 10 minutes. In 15-minute increments that rounds up to 2.25 hours: 2.25 x $45.00 = $101.25. If the warehouse rounds up to whole hours, it bills 3 x $45.00 = $135.00, which is $33.75 more. The contract's increment decides which is right.

Billing errors that show up

  • Hours without approval. Work billed with no request or quote from you, when the contract requires approval.
  • Minimum hour blocks not in the contract, such as a 2- or 4-hour minimum per worker or per job.
  • Rounding to larger increments than the contract allows.
  • Hours above the quote with no notice or change approval.
  • Hourly billing for work that has a per-unit rate, such as labeling or kitting.
  • Labor to fix the warehouse's own mistakes, such as recounting after a mis-receipt or reworking mis-picked orders, billed to you as a project.
  • Materials billed twice, once in the project and again as packaging.
  • Vague descriptions like "warehouse labor" or "misc project" with no date, task or time log.

How to check special project fees

  1. Find the hourly rate, billing increment, any minimum and the approval rule in your contract.
  2. For each project line, find your written request or approved quote.
  3. Ask for the time log: date, task, number of workers and time spent.
  4. Recalculate: hours rounded to the contract increment x rate, plus materials.
  5. Check whether a per-unit rate in the rate card should have been used instead.
  6. Check whether the work fixed something the warehouse caused.
  7. Dispute anything unapproved or unsupported within your contract's window, using a credit request email.

Contract questions

  • What is the hourly labor rate, and does it change for weekends, rush jobs or overtime?
  • What is the billing increment, and is there a minimum per job or per worker?
  • Is written approval required before work starts, and before going over a quote?
  • Which value-added services have per-unit rates, and when does hourly billing apply instead?
  • Who pays for labor that fixes warehouse errors?
  • Will every project line include a description, date and time log?

A 3PL contract checklist covers these alongside the rest of the agreement. Have a lawyer review the contract before you sign.

Get special project charges checked

3PL Checker reviews special project and labor lines on your 3PL invoices against your rate card, flags unsupported minimums and increments, and lists the hours you should ask the warehouse to explain. The first audit is free, a person reviews every finding, and we never contact your warehouse.

Questions

What are value-added services in a 3PL?

Value-added services are jobs beyond standard receiving, storage and pick and pack, such as labeling, kitting, bundling, gift wrapping, inserts, product photography and inspections. They are billed per unit or per hour, and the rates should be in your rate card.

What is a special project fee on a 3PL invoice?

It is a charge for one-off work that has no standard rate, usually billed as labor hours at the 3PL's hourly rate plus any materials. It should match a quote or request you approved.

How do 3PLs bill hourly labor?

Usually as labor hours times an hourly rate, in fixed time increments such as 15 minutes or an hour, sometimes with a minimum per job. The increment and any minimum should be written in the contract.

Can a 3PL charge for labor I did not approve?

That depends on your contract. If it requires written approval before special project work starts, hours you did not approve are worth disputing, so ask for approval rules to be written in before you sign.