Introduction

Product labelling and packaging control represents one of the most critical yet frequently overlooked areas of food manufacturing operations. At its foundation, labelling and pack control encompasses the complete system of processes, procedures, and checks that ensures products are placed into correct packaging and labelled accurately throughout the production cycle. This extends from the moment packaging materials arrive at the manufacturing facility through to the final release of finished product. The scope includes both the tangible materials—printed labels, coded packaging, and physical containers—and the procedural frameworks that govern how these materials are selected, allocated, stored, retrieved, and applied to products during packing operations.

The term “labelling and pack control” itself encompasses several interconnected activities. These include the formal allocation and distribution of packaging materials to production lines, the establishment of offline printing and coding processes, the implementation of verification systems to ensure labels match products, the conduct of pre-production line clearance checks, the performance of in-line verification at multiple trigger points throughout production, the verification of printing accuracy including date codes and batch identifiers, and the reconciliation of packaging materials used against those issued. Each of these elements forms part of an integrated management system designed to prevent perhaps the most common source of product recalls and market withdrawals: the placement of products into incorrect packaging or the application of inaccurate labelling information.

Significance and Intent

The significance of effective labelling and pack control extends far beyond regulatory compliance, although regulatory requirements are indeed stringent and non-negotiable. The fundamental importance of this control lies in product safety and consumer protection. When products are placed into incorrect packaging—a situation that occurs more frequently than manufacturers would prefer—consumers may receive products containing allergens not declared on the label, nutritional information that does not reflect what is actually inside the package, storage or preparation instructions that are inappropriate for the actual product, or shelf-life information that is inaccurate. These scenarios represent direct threats to consumer safety, particularly for vulnerable populations such as individuals with food allergies, those following specific dietary regimens, or those with medical conditions requiring particular nutritional requirements.

Beyond safety, the integrity of labelling and pack control is essential for brand protection, supply chain traceability, and legal compliance. Retailers and distributors depend upon accurate product identification to manage their inventory systems and fulfil customer orders correctly. When packaging or labelling errors occur, the consequent product recalls or market withdrawals damage brand reputation, incur substantial financial costs, create regulatory scrutiny, and potentially result in enforcement action. For manufacturers operating in multiple markets or jurisdictions, inconsistent labelling control creates additional risk; products suitable for one market may inadvertently enter a different market where regulatory requirements differ or where the content declarations are inaccurate for the intended consumer base.

The ideal outcome of effective labelling and pack control is the creation of a system robust enough to prevent errors before they occur, rather than detecting them after products have been distributed. This prevention-focused approach requires multiple layers of control, beginning with careful management of the packaging materials themselves before they reach production, continuing through formal verification points integrated into the production process, and maintained through rigorous documentation that creates both a defensive record and evidence of due diligence. When labelling and pack control systems function effectively, they provide manufacturers with confidence that every product leaving the facility carries accurate, compliant, and appropriate labelling information.

Overview of Compliance

Achieving compliance with labelling and pack control requirements necessitates the establishment of documented management systems that address each phase of the packaging and labelling process. These systems should be designed to align with operational realities whilst maintaining the rigour required to prevent errors. The documented systems necessary for compliance include formal procedures governing the receipt and acceptance of packaging materials, the allocation and distribution of packaging to production lines, the control of offline printing and coding operations, the management of line clearances between product changes, the conduct of in-process verification checks, the operation and testing of online verification equipment where deployed, the documentation and investigation of any label or packaging inconsistencies, and the reconciliation of packaging materials issued, used, and returned.

These documented systems should be aligned with operational practices through several mechanisms. First, the procedures should reflect the actual physical layout and workflow of the manufacturing facility, rather than representing theoretical ideals disconnected from day-to-day operations. Second, the procedures should clearly assign responsibilities to specific roles or positions, ensuring that operators and supervisory staff understand their individual accountabilities. Third, the procedures should incorporate realistic timeframes and frequencies for checks based on the nature of the products manufactured and the associated risks. Fourth, the procedures should specify the documentation or records required to evidence that controls have been implemented and should identify where those records will be maintained and retained. Finally, the systems should be regularly reviewed and updated to reflect changes in products, packaging formats, equipment, or regulatory requirements, ensuring that procedures remain current and implementable.

Documented Systems

The documented systems required for effective labelling and pack control are multifaceted and must address each stage of the packaging lifecycle. The following systems should form the foundation of any comprehensive labelling and pack control regime.

Packaging Materials Allocation and Control Procedure

This procedure should establish a formal process for determining which packaging materials are allocated to specific production lines at specific times, with particular emphasis on ensuring that only packaging required for immediate use is available at the packing machines. The procedure should address several key elements: the method for identifying and selecting packaging materials required for a particular production run; the physical process by which packaging materials are transported from central storage to the production line; the method for confirming that the allocated packaging matches the product specification; and the process for returning unused packaging to storage after production is complete. The procedure should emphasise physical segregation of packaging materials, recognising that many packaging designs are visually similar and can be easily confused. Some manufacturers find it effective to implement a visual identification system whereby correctly allocated packaging is physically marked or isolated as “approved for this production run,” reducing the risk that nearby materials will be inadvertently selected.

Offline Printing and Coding Control Procedures

Where packaging materials are coded or printed offline before arrival at the packing line—for example, where date codes or batch codes are printed onto packaging materials in a separate operation—documented procedures should establish strict controls over this process. The critical requirements are that setting and amendments to printer parameters (such as the date codes to be printed, the batch number to be included, or changes to printing specifications) shall only be completed by an authorised member of staff, and that controls shall be in place to ensure only correctly printed material reaches the packing machines. The procedure should specify: who is authorised to make changes to printer parameters; how those personnel are identified and trained; what documentation must accompany any requested changes; what verification step occurs before printed materials are released from the coding area; what happens to materials found to be incorrectly printed; and how frequently the accuracy of printing is checked during a coding run. Password protection of printer control systems, restricted access to coding equipment, and mandatory verification checks before materials enter production are practical mechanisms through which these controls can be operationalised.

Label Use Reconciliation Procedure

Food manufacturers should implement a system to track the quantities of printed labels issued, used, and returned, and to reconcile these quantities to identify and investigate any inconsistencies. This procedure should detail the method by which labels are counted or tracked when issued to the packing line; the method by which used labels are recorded during production; the method by which unused labels are returned to storage; and the process for comparing quantities issued with quantities used plus quantities returned. Where significant discrepancies are identified—such as a situation where the quantity of labels used exceeds the quantity of product actually packed—investigation is required to determine the cause. Common causes might include counting errors, labels spoiled during application, labels spoiled during printing, or administrative recording errors. The reconciliation process should be formally documented and maintained with batch records.

Line Clearance and Start-Up Verification Checklist

This document should specify the actions required before production can commence, with particular emphasis on verification that all materials from the previous production have been removed and that the correct packaging for the new product is available. The checklist should itemise specific areas or zones within the packing line where product or packaging from the previous run is most likely to remain trapped, such as beneath conveyor belts, in hoppers, or within line guides. The checklist should require that personnel physically verify these areas rather than relying on assumptions. The checklist should also confirm that the line is labelled with the correct product identification and that any cleaning procedures required between products have been completed and verified. The document should specify who is authorised to sign off line clearance, typically a qualified supervisor or quality technician rather than the line operator.

Production Line Verification Check Sheets

Detailed check sheets or work instructions should document the multiple verification points required during a production run. These should specify: the timing of checks (at start of packing, at predefined intervals during the run, and at the end of the run); what aspects of the product or packaging are to be verified at each check point; the method by which verification occurs (visual inspection, barcode scanning, measurement); how results are recorded; what actions to take if a check identifies an error; and who performs the checks. The verification points should cover key elements including confirmation of the product identity, confirmation of the packaging identity, verification that date codes and batch codes have been printed correctly and are legible, verification that other required information (such as allergen declarations, country of origin, quantity indication, pricing information, or bar codes) is present and accurate, and confirmation that product orientation within packaging is correct where relevant.

Online Verification Equipment Procedures

Where bar code scanners, vision systems, or other automated equipment is used to verify labelling and packaging information, a comprehensive procedure should document the operation and testing of this equipment. The procedure should specify: the setup requirements for the equipment before a production run begins; the test protocol to be used for validating equipment function at start-up, at the end of the run, and at specified intervals during the run; how often testing should occur based on the manufacturer’s ability to identify, hold, and prevent release of non-conforming materials; what response should occur if equipment identifies a packaging error (such as automatic rejection of the product, triggering of an alarm for manual intervention, or halting of the line); and what alternative controls should be implemented if the equipment malfunctions. The procedure should also document a trained manual checking process that can be deployed in the event of equipment failure, ensuring that production can continue safely even if automated verification is temporarily unavailable.

Changeover and Line Transition Procedures

These procedures should detail the specific steps required when transitioning from one product to another on a packing line. The steps should include: the removal of all product and packaging materials from the previous run, including removal from known trap points; the removal and appropriate disposition of any pre-printed labels or coded packaging from the previous product; the cleaning of the line if required based on product compatibility; the allocation and allocation verification of the correct packaging for the new product; confirmation that any coding or printing equipment has been adjusted to the correct parameters; confirmation through a formal line clearance check that the line is ready for production of the new product; and the authorisation for production to commence.

Record and Documentation Schedules

Manufacturers should establish defined records and schedules that detail what records are created, how they are maintained, who is responsible for their completion, retention periods, and storage location. Records might include line clearance checklists, in-process verification sheets, online equipment test records, label reconciliation records, investigations into labelling discrepancies, training records for personnel involved in labelling operations, and calibration records for any equipment used in labelling verification.

Practical Application

The translation of documented systems into practical day-to-day operation requires clear understanding of responsibility and consistent implementation by both factory floor personnel and administrative staff. The following sections detail the practical actions and working practices necessary to meet labelling and pack control requirements.

Pre-Production Planning and Preparation

Office-based personnel should prepare, prior to the commencement of production, all documentation required for the production run. This includes confirming the product specification, identifying the approved packaging for that product, determining any coding or date marking requirements, confirming any special labelling instructions, and preparing batch production records that include the expected packaging for that batch. Quality assurance personnel should review this information before release to production, ensuring accuracy and completeness. The packaging materials themselves should be pre-positioned in a designated staging area near the packing line, but not yet allocated to the line machinery itself, allowing a final verification step to occur immediately before production begins.

Receiving and Acceptance of Packaging Materials

When packaging materials arrive at the manufacturing facility, the goods-in function should verify that the packaging received matches the purchase order and that the external labelling on the delivery is correct. More importantly, a sample of packaging from at least one box should be physically removed and verified to confirm that the packaging inside matches what the external labelling indicates. This simple but effective check has prevented numerous instances where packaging suppliers have inadvertently placed incorrect materials in boxes. Once verified as correct, some manufacturers find it helpful to physically attach a sample of the verified packaging to the outside of the box (without obscuring the original supplier label), providing a visual reference for factory personnel who will later select packaging for production use. Packaging materials should then be stored in a designated storage area with clear identification of product, colour, design, and any other distinguishing features.

Allocation of Packaging to the Production Line

At the time of production, the specific packaging required for the production run should be physically selected from bulk storage and transported to the packing line. This process is best performed by an identified supervisor or quality technician rather than by the line operator, creating a separation of responsibilities that reduces the risk of human error. The individual allocating packaging should verify, using the batch record and line clearance checklist, that the packaging being allocated is indeed the correct packaging for the product being produced. The packaging should be placed in a designated position at the packing machine, and no other packaging should be stored in close proximity. After completion of production, any unused packaging should be returned to bulk storage and the quantity returned should be recorded.

Management of Offline Coding and Printing Operations

Where date codes, batch codes, or other information is printed onto packaging in an offline printing operation, trained and authorised personnel should be responsible for setting or amending printer parameters. Before printing commences, the operator should verify that the printer has been set to the correct specifications by printing a sample and verifying that all information is correct, legible, and positioned appropriately. Printed materials should be inspected at specified intervals during the printing run to verify continued accuracy. Any materials found to be incorrectly printed should be segregated from correctly printed materials and clearly marked for destruction or rework. The personnel responsible for offline printing should maintain records documenting: the date and time printing commenced; the product identity and batch number being printed; the specifications used (such as date code, batch code, and any other information); the operator initials; any issues identified during printing; and the quantity of materials printed and verified as acceptable.

Pre-Production Line Clearance and Verification

Before production begins on a specific product, supervisory personnel should physically verify that the production line is clear of all materials from the previous production run. This verification should be evidenced by completion of a formal line clearance checklist that requires signed confirmation that: all product from the previous run has been removed; all packaging materials from the previous run have been removed and returned to storage; identified trap points have been inspected for residual materials; cleaning procedures (if required) have been completed and verified; the line is free from contamination or obstruction; coding or printing equipment has been adjusted to the correct settings; the correct packaging for the new product is available and allocated to the line; and the line is ready for production to commence. Only upon completion and sign-off of this checklist should production commence.

In-Production Monitoring and Verification Checks

During the production run, designated personnel should perform periodic verification checks to confirm that the correct product and packaging are being used. At minimum, a check should occur: at the start of packing (before significant quantities of product enter packaging); at predefined intervals during the production run (such as every hour, or more frequently where specified in the line clearance checklist); when printed packaging materials or labels are first brought to the line; and at the end of the production run. During each verification check, the checker should examine a sample of packaged product to confirm: the product identity is correct; the packaging is correct; date codes and batch codes are present, correctly printed, and legible; any other required information (such as allergen information, country of origin, quantity indication, pricing information, or bar codes) is present and correct; the format of information is correct (for example, that a date is printed in the correct format as specified in the batch record); and that labels are properly adhered if using adhesive-backed labels, or properly positioned if labels are applied during the packing process. Where visual inspection reveals any discrepancy, the checker should immediately notify the line supervisor, the production should be halted or carefully monitored pending investigation, and a formal record should be created documenting the issue identified and the corrective action taken.

Operation and Testing of Online Verification Equipment

Where automated equipment such as bar code scanners is used to verify label information, supervisory personnel should confirm that the equipment is properly set up and functioning before production commences. This requires passing test packs through the scanner to verify that the equipment correctly identifies and reads the bar code. Where the equipment is configured to reject non-conforming products, the rejection mechanism should be tested to confirm that rejected products are properly ejected from the production line. Similar testing should occur at the end of the production run and at specified intervals during the run (the frequency being determined based on the manufacturer’s ability to rapidly identify and quarantine products if the equipment fails). All such testing should be formally documented with date, time, identity of the person performing the test, and the results obtained. Where equipment malfunctions or fails to operate correctly, the trained manual verification procedure should be implemented to maintain control over product labelling, with a note being made in the production record that automated verification was not available and manual verification was performed instead.

Changeover Procedures Between Products

When transitioning from production of one product to another, the line operator should, in conjunction with supervisory personnel, verify through the line clearance process that all materials from the previous product have been removed, that the new packaging has been correctly allocated, that any coding equipment has been properly adjusted, and that the line is ready for production of the new product. This changeover process should be documented through completion of the line clearance checklist, with particular emphasis on physical verification of trap points where previous materials are most likely to remain. The changeover process represents one of the highest-risk periods for packaging errors, and therefore the procedural requirements for changeover should be no less rigorous than those for initial line setup.

Reconciliation of Packaging Materials Used

At the conclusion of a production run or batch, office-based personnel should reconcile the quantities of packaging materials issued against the quantities used and returned. This reconciliation should compare: the number of packaging units issued to the production line; the number of packaged products produced (as recorded on the batch record or production logs); the number of packaging units returned to storage; and any identified waste or spoilage. Significant discrepancies should be investigated to determine the cause. Common reasons for discrepancies include printer errors, operators spoiling packaging during application, counting errors during issue or return, or data recording errors. Documentation of this reconciliation should be maintained with the batch record.

Investigation and Documentation of Discrepancies

Where any discrepancy or inconsistency is identified during labelling and pack control checks, a formal investigation should be initiated. The investigation should document: what discrepancy was identified and when; what product batch was affected; what the presumed cause is based on available evidence; what further investigation is required; and what corrective action will be taken. In some cases, the corrective action may be straightforward (such as identification of a counting error that requires correction of paperwork). In other cases, more substantial investigation may be required to determine whether any product in the distribution chain has received incorrect packaging, in which case product traceability and potential recall considerations may arise.

Personnel Training and Competency

All personnel involved in labelling operations—including line operators, quality checkers, supervisors, and administrative staff—should receive documented training on labelling and pack control procedures prior to commencing these duties. Training should cover the specific procedures applicable to the products and lines on which the individual works, the risks associated with incorrect labelling or packaging, the importance of their specific role in preventing errors, the actions to take if an error is suspected, and the documentation required. Training records should be maintained, and the effectiveness of training should be verified through periodic competency checks or refresher training.

Pitfalls to Avoid

Experience across the food manufacturing industry has revealed common shortfalls and difficulties that frequently arise in the implementation of labelling and pack control systems. Understanding these pitfalls and how to overcome them significantly enhances the effectiveness of control systems.

Underestimation of Risk During Changeovers

One frequently encountered pitfall is the underestimation of the risk associated with product changeovers on packing lines. Changeover periods represent particularly high-risk points because multiple variables change simultaneously—the packaging, the coding settings, the line configuration, and sometimes even the equipment adjustments. Many manufacturers implement thorough controls for the initial setup of a production line but become complacent about changeover procedures, viewing them as routine or routine repetition of procedures already completed. The reality is that each changeover represents an equivalent risk to the initial line setup. The solution is to apply the same rigour to changeover procedures as to initial setup procedures, with formal line clearance checklists, verification checks, and sign-offs from supervisory personnel.

Inadequate Physical Segregation of Packaging Materials

A common difficulty arises when packaging materials are stored in such proximity to one another that operators working on the packing line can reach materials intended for different products or different production runs. This proximity creates risk that the wrong packaging might be selected, particularly when visual differences between packaging designs are subtle. Manufacturers experiencing difficulties with packaging accuracy should evaluate their physical storage arrangements. In some cases, implementing a requirement that packaging materials must be physically located at some distance from the production line, with allocation occurring only through a formal process managed by supervisory personnel, eliminates this risk. In other cases, implementing a visual identification system—such as colour-coded labels or tags affixed to each box of packaging—helps operators rapidly confirm that they have selected the correct packaging.

Inconsistent or Cursory Pre-Production Checks

Another frequently observed pitfall is the conduct of pre-production line clearance checks in a cursory manner, with supervisory personnel completing line clearance checklists without genuinely verifying that all requirements have been met. In some cases, checklists are completed after production has already commenced, creating a false record. The solution is to ensure that line clearance checklists are completed prior to production commencement, with the individual completing the checklist personally visiting the line to physically verify each required element. Management should periodically audit line clearance completion by reviewing the checklist and then independently verifying that the described conditions actually exist on the line.

Absence of In-Process Verification

Some manufacturers implement pre-production and post-production verification checks but omit interim verification checks during the production run itself. The assumption—often incorrect—is that if the line was correctly set up at the start of production, errors cannot occur during the run. In reality, mistakes can occur at any time: printing equipment can malfunction; label applicators can become misaligned; operators can inadvertently change line settings; or coding equipment can fail. Regular in-process verification checks, occurring at defined intervals and when specified trigger events occur (such as when new packaging is first brought to the line), catch such errors in real time whilst only a portion of the batch has been affected, rather than detecting errors only after the entire batch has been packed.

Over-reliance on Automated Equipment Without Backup Controls

Where online verification equipment such as barcode scanners is deployed, some manufacturers assume that automated verification eliminates the need for manual checks or other control mechanisms. However, automated equipment can malfunction, can be set up incorrectly, or can fail to identify errors in certain circumstances. A robust system includes: formal procedures for setup and validation of the equipment before use; regular testing during the production run; and a trained manual verification procedure that can be deployed if equipment malfunctions. In some instances, manufacturers have removed equipment from service because it was triggering frequent alarms, only to discover later that the equipment was functioning correctly and identifying genuine errors that then went uncaught.

Inadequate Documentation and Record-Keeping

Food manufacturers sometimes struggle to maintain adequate records of labelling and pack control activities. Paper-based records are easily lost or become illegible; checklists are completed retrospectively rather than in real time; documentation is scattered across multiple locations making audit trails difficult to reconstruct. Solutions include: implementing standardised documentation formats that are clearly and legibly completed; establishing a designated location where all labelling-related records are centrally maintained; requiring that records be completed in real time rather than retrospectively; and considering the use of digital or electronic record-keeping systems that provide automatic timestamping and create searchable audit trails.

Insufficient Control of Offline Printing Operations

Manufacturers that perform offline printing or coding of packaging materials sometimes lack adequate controls over the printing process itself. Printer setup might be performed by insufficiently trained personnel; changes to printer parameters might occur without authorisation; printed materials might be released for use without verification of print quality; or operators might not follow standardised approaches to confirming print accuracy. The solution is to ensure that only specifically trained and authorised personnel have access to printer controls; that printer setup changes require documented approval before implementation; that samples of printed materials are verified for accuracy before the main printing run; and that verification continues at intervals throughout the printing run.

Lack of Traceability When Packaging Errors Occur

In some cases, when packaging errors are discovered, manufacturers lack adequate documentation to determine what products were affected, which customers received the incorrectly packaged product, and what corrective actions are required. This situation arises when batch records do not clearly identify the packaging used, when the link between product batches and packaging lot numbers is not clearly documented, or when packaging material lot numbers are not recorded. The solution is to ensure that batch records clearly identify: the packaging materials used (including packaging lot numbers where relevant); the date of the production run; the quantity of product packaged; the lot numbers of any coded or printed information applied to packaging; and any other information necessary to reconstruct which packaging was used for which products. This information should allow rapid traceability determination if an error is later discovered.

In Summary

Labelling and pack control represents a critical system within food manufacturing operations, one whose importance is evidenced by the fact that mislabelling and packaging errors remain among the most common reasons for product recalls and market withdrawals. Effective control of labelling and packaging is achieved through the integration of multiple elements: formal documented procedures that define how packaging materials are received, stored, allocated, verified, and reconciled; clear assignment of responsibilities to specific personnel or roles; implementation of multiple verification checkpoints at key stages of the production process; training and competency assurance for all personnel involved in labelling operations; and robust documentation and record-keeping that creates both an audit trail and evidence of due diligence.

The most effective labelling and pack control systems are those that are integrated into daily operational practice rather than representing an additional compliance layer that feels separate from production. This integration is achieved when: procedures reflect the actual workflow and layout of the manufacturing facility; responsibilities are clearly understood by the personnel holding them; verification checks are timed to align with natural breaks in the production process; documentation requirements are streamlined to avoid excessive administrative burden; and the system is regularly reviewed to identify any areas where improvements can be made.

Particular attention should be paid to the changeover periods between production of different products, as these represent times of elevated risk when multiple variables change simultaneously. The application of rigorous control at these junctures—through formal line clearance procedures, physical verification by supervisory personnel, and documented sign-off before production commences—significantly reduces the risk of errors.

The importance of allocation of packaging materials should not be underestimated. By controlling the physical positioning of packaging materials to the extent that only the correct packaging is accessible to the production line operator, and by ensuring that this allocation occurs through a formal process managed by supervisory personnel rather than through line operator selection from multiple available options, manufacturers effectively remove one of the most common sources of error.

Finally, the commitment of senior management to the importance of labelling and pack control is essential for sustained effectiveness. When management demonstrates through resource allocation, training provision, and regular review of systems that labelling control is a priority, the entire organisation takes this responsibility seriously. Conversely, where labelling and pack control systems are viewed as compliance obligations to be minimally met rather than as integrated operational systems essential to product safety, the likelihood of error increases substantially. Investment in labelling and pack control is investment in product safety, brand protection, and operational excellence.