Commercial Production Guide
Labor: Where the Work Really Goes
A freeze dryer runs itself for most of the cycle, but the operation does not: people prepare food, load trays, monitor the machine, unload, package, clean and keep records. Machine runtime is not equal to labor time. This guide splits labor into the seven real work areas and shows how to cost it per batch.
Category: Labor
The Seven Labor Areas
Plan labor across all seven, because skipping any of them in the budget is how costs quietly escape:
- Preparation. Washing, trimming, cutting, cooking, pureeing, portioning and tray loading. Usually the largest labor block for fresh food.
- Loading. Placing trays into the machine, checking the gasket, confirming even loading and starting the cycle properly.
- Monitoring. Checking the cycle at intervals, catching alarms and noting machine behavior. Light but real, and someone must be available.
- Unloading. Removing finished trays promptly and moving product to packaging without letting it sit exposed.
- Packaging. Weighing, filling, adding absorbers, sealing, inspecting and labeling. This is a labor line of its own, and often the real bottleneck.
- Cleaning. Trays, chamber, defrost drain, gasket, packaging surfaces and tools, per the sanitation schedule.
- Recordkeeping. Batch records, logs, labels and any client notes. Small per batch, essential to the business.
Machine runtime is not labor time
A 30-hour cycle does not mean 30 hours of work. The reverse is closer to true in small operations: the labor happens before the cycle, at its end, and in packaging and cleaning, while the running hours need only monitoring. Plan labor by tasks, not by cycle hours.
Costing Labor per Batch
Formula
Labor Cost per Batch = Total Labor Hours × Hourly Labor Cost
Total the hours spent on the batch across preparation, loading, monitoring, unloading, packaging, cleaning and recordkeeping, then multiply by the hourly labor cost (including any benefits or overhead your operation counts).
Use your own hours and rate. Where you have not measured hours yet, record them for a few batches before quoting labor-sensitive work.
Separating prep, packaging and cleaning labor
For cost decisions, it helps to keep preparation, packaging and cleaning hours separate in the record, because they scale with different things: prep scales with fresh volume, packaging with package count, cleaning with batches and product type. The Batch Cost calculator accepts separate labor lines.
Labor questions to answer from your own records
- How many minutes does preparation really take per kilogram or per tray, for each product?
- How many packages can one person seal and inspect in an hour, at which package size?
- How long does cleaning and defrosting take after a high-moisture batch versus a low one?
- How many batches per week can the current staffing actually support through all seven areas?
Labor is a capacity input too
Labor limits production just like machine time does. If preparation or packaging cannot keep up, the machine waits. Include labor in capacity thinking, not just in cost thinking. See Bottlenecks for how to spot it.
Frequently Asked Questions
How many labor hours does a batch really need?
It depends on the product, the preparation, the package count and the operation. There is no universal figure; measure your own hours across the seven areas and use those.
Should monitoring time be counted as labor?
If someone must be available, the availability has a cost even when the attention is light. Count the scheduled monitoring time honestly rather than ignoring it.
Is labor part of capacity?
Yes. Machine hours describe the machine; labor hours describe the people around it. Both are required for any realistic production plan.
Key Takeaways
- Labor splits across preparation, loading, monitoring, unloading, packaging, cleaning and recordkeeping, not cycle hours.
- Labor cost per batch = total labor hours × hourly labor cost, from your own measured hours.
- Labor is a capacity input: prep or packaging that cannot keep up makes the machine wait.
Related Guides
Continue through the Commercial Production Center with these related guides.