How to Determine Optimal Manpower Strength in Dairy Plants

Running a dairy plant efficiently isn’t just about having the right machinery or a steady milk supply – it depends equally on having the right number of people, in the right roles, at the right time. Too few workers and operations stall; too many and costs spiral unnecessarily. Determining the optimal manpower strength for a dairy plant is therefore one of the most critical planning decisions a plant manager makes. Unlike a simple headcount exercise, it requires a systematic assessment of functional roles, equipment, shift patterns, skill levels, and several other dynamic factors that vary from one plant to another.

Why there’s no one-size-fits-all formula 🔗

One of the first things to understand is that there is no fixed guideline for calculating the number of personnel in a dairy plant. Every plant is different – in size, product mix, level of automation, and operational style. What works for a large cooperative processing 500,000 litres per day won’t apply to a small plant handling 20,000 litres. This is precisely why manpower strength must be determined by thoroughly understanding the plant’s functional requirements and organizational structure, along with several influencing factors unique to that facility.

The goal, as industry practice establishes, is to deploy optimum strength – neither understaffed nor overstaffed. Both extremes are counterproductive. Overstaffing inflates wage costs and breeds inefficiency, while understaffing leads to worker fatigue, errors, and missed production targets. A well-calibrated workforce directly shapes plant productivity.

Key factors that shape manpower requirements 🔗

Before arriving at staffing numbers for any section, a plant manager must evaluate several interlinked factors. These aren’t checklists to be ticked off once – they need to be revisited whenever there’s a change in production scale, product range, or operational setup.

Capacity and plant size 🔗

The installed capacity and its actual utilization rate significantly influence how many workers are needed. Interestingly, even a plant with low throughput can sometimes require more workers if its layout is spread out or the equipment design is labor-intensive. Capacity alone doesn’t determine staffing – the physical arrangement and technicality of operations matter just as much.

Product mix and technology 🔗

The types of products being made directly affect staffing needs. Retail packing operations demand more personnel compared to bulk packing, and products like cheese or indigenous items (peda, paneer) that rely on traditional methods need more hands-on workers than those made using automated machinery. The more manual the process, the larger the workforce required.

Level of automation 🔗

This is arguably the single biggest variable in modern dairy plants. Fully automated facilities may require just two or three operators per department per shift, overseeing processes from a central control room, while traditional plants with limited automation need significantly more workers for the same operations. Automation reduces routine labor but creates demand for technically trained operators who can manage and troubleshoot complex systems.

Number of shifts 🔗

Most dairy plants run three shifts of eight hours each to ensure continuous processing of a highly perishable product. Milk procurement and distribution are typically handled in two shifts (morning and evening), but production, maintenance, and quality control generally require round-the-clock working across three shifts. Each shift must be independently staffed with the required skill sets, which means manpower needs to be multiplied accordingly – and then adjusted further for weekly offs and leave.

Legal provisions and leave management 🔗

Labour welfare regulations set mandatory limits on working hours, rest periods, and leave entitlements. These legal requirements act as mandatory minimums that directly determine staffing levels – for instance, you cannot simply ask one person to cover two shifts to compensate for an absent colleague without breaching legal norms. Manpower planning must always build in a buffer to account for weekly offs, earned leave, sick leave, and public holidays.

Seasonal variations 🔗

Dairy is heavily influenced by seasons and festivals. During summer, milk procurement typically drops while consumer demand rises. Festival periods create similar demand spikes. These fluctuations mean that base manpower must be supplemented with temporary workers during peak periods – though this is generally feasible only for unskilled roles. Skilled and semi-skilled positions cannot be easily filled or reduced on a seasonal basis, making long-term planning for the permanent workforce essential.

Contractual arrangements 🔗

Many dairy plants manage variable or increased workloads by outsourcing specific tasks – can and crate cleaning, product packing, transportation, and shifting of finished goods are common examples. Sub-contracting such activities can substantially reduce the requirement for permanent workers and gives the plant flexibility to scale labour up or down based on operational demands.

Manpower requirements by function: practical examples 🔗

With the above factors in mind, it becomes possible to estimate staffing levels section by section. The following breakdowns reflect standard industry guidelines for major dairy functions, keeping in mind that actual numbers will vary based on the factors discussed above.

Milk collection and reception 🔗

This is where the daily intake begins, and staffing here depends entirely on whether the plant receives milk in bulk tankers or individual cans. Bulk reception is relatively streamlined – one operator and one helper are generally sufficient to manage tanker unloading, sampling, and milk transfer. Can reception, on the other hand, is far more labour-intensive. Depending on the level of automation, this can require anywhere from 9 to 14 persons to handle grading, weighing, sampling, and washing operations. A straight-through or rotary can washer needs at least two persons, with one worker each for the can scrubber, steam block, and inspection stages. One additional operator is needed for managing milk movement from the dump vat to storage tanks.

Milk processing 🔗

The core processing operations – pasteurization, standardization, homogenization – are relatively compact in terms of staffing. One operator and one dairyman per shift are typically adequate to manage milk processing, and these individuals can also handle CIP (Clean-In-Place) cleaning work, making this section efficient even in smaller plants.

Milk packing 🔗

Packing is consistently one of the most labour-intensive sections in a dairy plant, particularly for retail pack sizes. Each packing machine head requires one dedicated operator. Beyond the filling machines, two persons are needed for the crate washer, two each for crate loading and unloading, and two for stacking crates in the cold room. One additional person for cleaning and monitoring pouch weights is also advisable. The total adds up quickly, especially where multiple packing lines run simultaneously.

Creamery section 🔗

For butter and ghee production, each butter churn requires one operator per shift. Two workers are needed to move butter to the ghee section, and two persons handle ghee making. A skilled packing machine operator in each shift rounds off the creamery team. Where a butter churn and ghee production facility are integrated, this section can function with a lean but skilled team.

Indigenous products section 🔗

For products like peda and paneer, manpower requirements depend heavily on the level of automation and the product mix. A section with two kettles for peda and one for paneer will have different staffing needs than one producing a wider range of traditional items. Manual methods, which are common in this section, require more workers with specialized culinary and process skills.

Powder plant 🔗

A fully automatic powder plant can operate with just two to three persons per shift, covering plant operations, bagging, and managing bagging material. At lower levels of automation, manpower requirements increase proportionally, as more manual intervention is needed at each stage of the spray drying and bagging process.

Utility section 🔗

The utility section – covering boilers, refrigeration, electrical systems, and mechanical maintenance – requires qualified personnel at all times since plant breakdowns directly affect production continuity. Under a trained sectional head, the recommended staffing includes one boiler operator with one attendant per shift, and one to two refrigeration operators per shift depending on the number of machines. One electrician, one fitter, and one welder per shift, each supported by a helper, is considered the optimum configuration for maintaining smooth and uninterrupted plant operations.

Worker categories and qualification criteria 🔗

Once the number of personnel per section is estimated, the next step is defining the quality of manpower – that is, the skill level and qualification required for each role. Dairy plant workforce needs span three broad categories.

Unskilled workers handle physical labour tasks such as can washing, material movement, and crate stacking. No specialized qualifications are needed, and they are also the easiest to hire or reduce on a seasonal or contractual basis.

Semi-skilled workers – machine operators, dairymen, and process helpers – typically hold a basic matriculation or ITI (Industrial Training Institute) qualification, ideally in fitter or electrical trades, along with relevant apprenticeship training. Candidates without formal ITI backgrounds but with practical experience may also qualify.

Skilled and managerial personnel require professional qualifications. Laboratory analysts performing chemical work should hold degrees in chemistry, dairy technology, or food technology. Microbiological analysis requires B.Sc. graduates in microbiology or related disciplines. Production supervisors and shift in-charges are best suited with dairy or food technology qualifications. The plant manager should be a highly experienced technologist or engineer with solid knowledge of planning, administration, and IT systems. Milk procurement heads are ideally veterinary or dairy science graduates with cooperative management experience.

Importantly, most plants hire candidates with basic qualifications and then build their skills through structured on-the-job training and continuous assessment – rather than waiting to recruit fully formed experts for every role.

Aggregating shift-wise manpower into total plant strength 🔗

The final step in determining overall manpower strength is a straightforward but methodical one: add up the requirements across all shifts and all sections. Production, quality control, and maintenance functions that run round-the-clock need to be counted for each of the three shifts. Support functions like accounts, materials management, marketing, and administration typically operate in a single day shift.

When totalling these requirements, planners should also factor in a buffer – generally 10 to 15% additional capacity to handle absences and unexpected situations without disrupting operations. This buffer can be maintained through a pool of trained casual or contract workers rather than permanently increasing headcount.

Effective manpower planning also requires periodic revision. Changes in production schedules, new product introductions, equipment upgrades, or shifts in seasonal demand all call for a fresh assessment of manpower strength – not just a one-time calculation at the plant’s inception.

What do you think? How would the staffing calculations for a highly automated dairy plant differ from those of a semi-automated one handling the same daily milk volume? And what strategies could a plant manager use to maintain optimum manpower strength during periods of sudden seasonal demand spikes?

References

1. http://dairy-technology.blogspot.com/2014/01/human-resource-planning.html
2. https://www.crbgroup.com/insights/food-beverage/dairy-processing
3. https://www.encyclopedia.com/economics/news-and-education-magazines/dairy-industry-worker
4. https://www.staffany.com/blog/manpower-planning/
5. https://truein.com/blogs/manpower-planning