1. Wave Volume & Labor Headcount Model Volume Baseline: 25,000 daily B2C orders (75,000 total units at 3.0 units/order) across a 22.5-hour net operating day (3x 7.5h paid working shifts). Inbound & Putaway (14 FTEs total): 6 EPJ Dock Receivers (18 pallets/hr) + 8 Reach Truck Putaway Operators (22 pallets/hr) concentrated 60% in Shift 1. Multi-Batch Picking (42 FTEs total): 75,000 units ÷ 115 UPH target = 652 pick-hours/day → 24 Pickers (Shift 1), 22 Pickers (Shift 2), 10 Pickers (Shift 3). Packing & Outbound Manifest (28 FTEs total): 75,000 units ÷ 160 UPH pack rate = 468 pack-hours/day → 12 Packers (Shift 1), 12 Packers (Shift 2), 4 Packers + 4 Outbound Loaders (Shift 3). 2. Shift Structure, Staggering & Dynamic Flexing Staggered Start Times: Inbound and Picking start at 06:00; Packing and Outbound Shipping start at 06:45 to ensure pick-tote buffer lanes are 70% full before packers log in (eliminating morning starvation). Break Rotation: Split each shift into 2 sub-teams taking 15-minute breaks 30 minutes apart so automated sortation conveyors and pack stations never halt. Cross-Trained Labor Flexing: At 14:30 (2 hours prior to carrier cut-off), flex 30% of Inbound Putaway operators to Pack Stations and Outbound Dock Loading to clear the daily parcel wave. 3. MHE Fleet Allocation & Power/Battery Protocol Fleet Sizing: 12 Electric Ride-On Pallet Jacks (EPJs), 10 Narrow-Aisle Reach Trucks, 45 12-Tote Pick Carts, and 150 wearable ring scanners (including a 10% hot-swap spare pool). Lithium-Ion Opportunity Charging: Enforce mandatory 15-minute plug-in opportunity charging during operator breaks and 30-minute meal windows to maintain battery State of Charge (SoC) between 35% and 85%, eliminating mid-shift battery drops. Pedestrian-MHE Separation: Lock out Reach Truck entry into mezzanine ground aisles during peak batch-picking waves (09:00–12:00); install blue LED safety spotlights and physical steel bollards at aisle intersections. 4. OSHA / ISO Pre-Shift MHE Inspection & LOTO Protocol Digital RF Pre-Shift Check (3 Minutes): Operators must scan the MHE asset barcode prior to WMS login and verify: 1. Horn, backup alarm & blue light; 2. Hydraulic mast chains & zero fluid leaks; 3. Deadman brake pedal response; 4. Load-wheel polyurethane tread integrity. Red-Tag LOTO Escalation: Any failed safety item automatically locks the MHE asset ID in the WMS, preventing ignition login. The operator removes the key, attaches a physical Red LOTO Tag to the steering tiller, parks in the Maintenance Quarantine Bay, and draws a spare unit. 5. Labor & Fleet KPIs with Benchmarks Direct-to-Indirect Labor Ratio: ≥ 82% direct touch-labor hours vs. ≤ 18% indirect support/supervision. Overtime Hours Percentage: ≤ 3.5% of total weekly payroll hours during Q4 peak. MHE Fleet Mechanical Uptime: ≥ 98.5% availability across all shifts. Labor Cost Per Unit Shipped: ≤ $0.42 per unit fulfilled.