Production Scheduling: Fitting Orders to Capacity Without Chaos
- The £12,000 Overtime Bill That Came from Poor Scheduling
- The Capacity Calculation: How Much Can You Actually Make?
- Job Sequencing: The Hidden Efficiency in Scheduling
- How AskBiz Supports Production Scheduling
- Managing Schedule Changes: The Urgent Order Problem
- Before and After: A Thai Food Manufacturing Company
- Communicating Delivery Dates with Confidence
- Schedule Once, Execute with Confidence
Production scheduling in an SMB factory — deciding what to make, when, on which machine, with which team — is one of the hardest operational challenges. Most factories schedule by gut and firefight daily. A capacity-led scheduling approach transforms delivery reliability and reduces overtime costs.
- The £12,000 Overtime Bill That Came from Poor Scheduling
- The Capacity Calculation: How Much Can You Actually Make?
- Job Sequencing: The Hidden Efficiency in Scheduling
- How AskBiz Supports Production Scheduling
- Managing Schedule Changes: The Urgent Order Problem
The £12,000 Overtime Bill That Came from Poor Scheduling#
A Leeds precision plastics moulder with four injection moulding machines had a consistent problem: every month, the last week was chaos. Orders that had been accepted in good faith at the beginning of the month were overdue, the production manager was rescheduling machines nightly to try to catch up, and overtime was running at 30–40 hours per week for the final 10 days. Annual overtime cost attributable to this last-week scramble: approximately £12,000. The root cause was not a capacity shortage — the factory had capacity to fulfil the orders at normal operating hours. The problem was that orders were being accepted without a systematic check against available machine hours, and jobs were being scheduled in the order they were received rather than in an order that used machine capacity efficiently. Two smaller jobs on the same mould tool could be run back-to-back with one setup; instead, they were scheduled a week apart, each incurring a separate setup. Simple scheduling disciplines — capacity checking at order entry, logical job sequencing — would have eliminated most of the overtime.
The Capacity Calculation: How Much Can You Actually Make?#
The starting point for production scheduling is knowing your actual capacity — not theoretical capacity but realistic capacity accounting for planned downtime, changeover time, and typical efficiency. For a factory with three machines running one shift of 8 hours, 5 days per week: theoretical capacity is 3 × 8 × 5 = 120 machine-hours per week. Applying an OEE factor of 65% gives realistic productive capacity of 78 machine-hours per week. Deducting planned maintenance (4 hours per week across the three machines) gives available production capacity of 74 machine-hours. This is your scheduling baseline — the number against which all incoming orders must be checked. If your current order book requires 82 machine-hours next week to deliver on time, you have a capacity gap of 8 hours before accepting any new orders. Without this calculation, you are scheduling blind.
Job Sequencing: The Hidden Efficiency in Scheduling#
The sequence in which you run production jobs has a material impact on total production time due to setup and changeover costs. In most factories, certain sequences of jobs are more efficient than others. In printing, colour sequencing (light to dark) reduces ink changeover time. In injection moulding, grouping jobs that use the same mould tool eliminates repeated tool changes. In food manufacturing, allergen sequencing (allergen-free before allergen-containing, not vice versa) reduces cleaning time and allergen risk. A good production schedule does not just check capacity; it sequences jobs intelligently to minimise total changeover time. Even basic sequencing — grouping similar jobs, avoiding back-and-forth between incompatible setups — can reduce weekly changeover time by 20–30%, effectively adding capacity without adding resources.
How AskBiz Supports Production Scheduling#
AskBiz production management provides the order book visibility and batch management that underpins effective scheduling. When customer orders are entered in AskBiz, they appear in the production queue with required quantities, due dates, and linked BOM. The production manager can see all open orders, sort by due date, and assign them to production batches with planned start and end dates. Materials availability is checked automatically against current inventory — so the schedule only includes jobs for which materials are available or on order with sufficient lead time. For factories syncing to Xero, completed production batches post their costs automatically, so the financial impact of the production schedule — labour and material costs versus revenue — is visible in near-real-time rather than discovered at month-end.
Managing Schedule Changes: The Urgent Order Problem#
In most SMB factories, the production schedule is disrupted multiple times per week by urgent orders from key customers. Managing this effectively requires a clear protocol, not an ad-hoc negotiation. When an urgent order is received, the production manager should immediately assess: what is the cost of inserting this order into the current schedule? Which other orders will be pushed back? Are those customers willing to accept a delay? What overtime cost would be required to avoid delaying any other orders? With this information, the commercial decision — do we accept the urgent order, at what expedite premium, with what impact on other customers — can be made consciously rather than by default. Many factories accept urgent orders automatically and then fail on delivery promises to other customers who had legitimate priority. The result is relationship damage across the customer base.
Before and After: A Thai Food Manufacturing Company#
A Bangkok-based food manufacturer producing ready-to-eat products for hotel and restaurant chains was scheduling production through daily production meetings that consumed 45 minutes of management time and still resulted in frequent scheduling errors. After implementing AskBiz order management and production batch scheduling, the daily scheduling meeting was replaced by a 15-minute review of the AskBiz production dashboard — which showed open orders sorted by due date, materials availability status, and current batch progress. Schedule changes that previously required a meeting to communicate were updated in the system and visible to all team leaders immediately. On-time delivery performance improved from 74% to 91% within three months. The reduction in daily scheduling firefighting freed the production manager to spend time on process improvement rather than logistics management.
Communicating Delivery Dates with Confidence#
One of the most valuable outcomes of proper production scheduling is the ability to give customers accurate delivery commitments rather than estimates hedged with "we'll try our best." When your order book is visible against your capacity plan, you know — before you confirm the order — whether you can deliver in the customer's required timeframe. If you cannot, you know by how many days and can have an honest conversation about the delivery date or the capacity to expedite. Customers overwhelmingly prefer an honest date over an optimistic one that is later broken. The reputation for reliable delivery dates — which can only come from reliable scheduling — is a significant competitive differentiator for SMB manufacturers.
Schedule Once, Execute with Confidence#
Good production scheduling is not about having a perfect plan — it is about having a visible plan that can be intelligently adjusted as reality deviates from the plan. AskBiz gives you the order book visibility, materials status, and batch management tools to build and maintain that visible plan. Start by entering your current open orders, assigning them to production batches with planned dates, and checking them against your capacity baseline. Within one week, you will have more clarity about your production load than you have had in months. Within one month, your delivery reliability will begin to improve. AskBiz tracks your production costs in real time. Try free at askbiz.co
People also ask
How do I schedule production in a small factory?
The starting point for production scheduling is knowing your actual capacity — not theoretical capacity but realistic capacity accounting for planned downtime, changeover time, and typical efficiency.
What is capacity planning in manufacturing?
The sequence in which you run production jobs has a material impact on total production time due to setup and changeover costs. In most factories, certain sequences of jobs are more efficient than others.
How do I reduce overtime costs in my factory?
AskBiz production management provides the order book visibility and batch management that underpins effective scheduling. When customer orders are entered in AskBiz, they appear in the production queue with required quantities, due dates, and linked BOM.
How should I handle urgent orders without disrupting my production schedule?
In most SMB factories, the production schedule is disrupted multiple times per week by urgent orders from key customers. Managing this effectively requires a clear protocol, not an ad-hoc negotiation.
What is job sequencing in production scheduling?
A Bangkok-based food manufacturer producing ready-to-eat products for hotel and restaurant chains was scheduling production through daily production meetings that consumed 45 minutes of management time and still resulted in frequent scheduling errors.
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