How Warehouse Managers Should Track Work In Progress On The Floor

Goods that have entered production but are not yet finished.

Work in Progress Goods that have entered production but are not yet finished. This entry focuses on practical methods warehouse and floor managers can use to track WIP physically and digitally, reduce errors, and keep production flowing smoothly between warehouse and manufacturing.

Effective tracking of Work in Progress combines clear physical flows, disciplined inventory control, and integrated software. Warehouse managers must treat WIP differently from raw materials and finished goods: WIP items move more frequently, have variable states, and require tighter sync with production schedules and quality processes.

Key Tracking Principles

Keep visibility tight, minimize double handling, and ensure status changes are captured at the point of action. Define location codes for each process stage, require scan-based confirmations when WIP is moved or completed, and tie WIP records to production orders or lot numbers so traceability exists for quality events, recalls, or warranty claims.

Systems And Technology To Use

Choose a combination of MES, ERP, and WMS features that support WIP workflows. At minimum, use scanning (barcode or RFID) to record kitting, operation start/stop, and completion. Mobile devices at work centers and automated data capture reduce manual entry errors. Configure your WMS to hold WIP locations as non-pickable to prevent accidental shipping of incomplete units.

• Automation: Equip work centers with mobile scanners or tablets for immediate status updates.
• Integration: Link production orders in MES/ERP to WMS locations so WIP appears on both systems.
• Visibility: Dashboards should show WIP counts and value by work center and production order in real time.

Physical Layout And Material Flow

Design the floor for smooth flow: raw material staging adjacent to kitting, WIP lanes by process sequence, inspection areas between critical operations, and finished goods storage close to outbound docks. Use visual management—floor markings, color-coded racks, and kanban cards—to signal WIP status and reduce routing errors. Reserve staging lanes for WIP so material handlers and pickers can’t mix categories.

Process Controls And Best Practices

Enforce strict routing rules for WIP movement: every transfer should be recorded with a scan and linked to a production order. Implement WIP limits per work center to prevent pile-ups and apply root-cause analysis to persistent accumulations. Regularly conduct short physical audits at shift changes to reconcile digital WIP counts with physical units and catch missing or misplaced items quickly.

• Scan For Status: Require scanning when WIP enters and leaves a work center and at completion.
• Limit WIP: Use visual kanban or system-enforced limits to reduce overproduction and space constraints.
• Short Audits: Use shift-based mini-counts to keep digital records accurate and identify discrepancies fast.

KPIs Warehouse Managers Should Monitor

Useful KPIs include WIP units by process stage, WIP value, cycle time per operation, throughput, percentage of rework within WIP, and WIP days. Track trends rather than single data points. For example, rising WIP at a specific workstation over several shifts usually flags a bottleneck requiring corrective action, not simply a seasonal increase in orders.

Implementation Checklist For Tracking WIP

• Define Status Events: List the scans or triggers that indicate kitting, operation start, hold, completion, and rework.
• Map Locations: Assign location codes for all WIP zones and make them non-pickable in the WMS.
• Integrate Systems: Ensure MES/ERP production orders and WMS locations sync and share identifiers.
• Train Teams: Train operators and warehouse staff on scanning discipline and the reasons behind it.
• Monitor And Adjust: Review KPIs daily and run root-cause for persistent WIP accumulation.

In short, the Work in Progress category requires special tracking methods on the floor to maintain production flow, protect inventory value, and ensure accurate accounting. Use defined location strategies, scan-based status changes, integrated systems, and focused KPIs to keep WIP visible and under control for both warehouse and production teams.