Note
When Maintenance Visits All Come Due in the Same Month
The arrangement starts with good intentions. You spread the maintenance visits out when you write the contracts: two sites in January, three in February, a few more through the year. Then April arrives, factories stop production for Songkran, and the factory managers who had been slow to confirm dates all call in the same week. Every client wants its annual electrical inspection completed before the shutdown. Every visit that slipped from February has now been pushed into April.
Your technicians are committed to three installation jobs running simultaneously. Nine maintenance visits are due. The math does not fit without a plan.
Why Does Every Maintenance Calendar Collapse at the Same Time?
The root is timing pressure that cuts in one direction.
Thai factories with floor electrical systems and installed solar or LED equipment face a statutory annual inspection requirement. The window they choose is not random: most factories target the Songkran shutdown in April, when machinery is off and production lines are quiet. Access to panel rooms, switchboards, and cable runs is straightforward when the factory is not producing.
That logic holds for every factory on your list. The result is that a maintenance schedule which looked spread across the year compresses itself into a single window every time a shutdown approaches.
The same pattern appears around the year-end holiday period in December, and again in January when factories open for the year and want systems confirmed before full production resumes. Three seasonal clusters, each one generating more demand than a team can cleanly absorb.
The contractor who has not counted the visits due in each window ahead of time discovers the problem in the last week of March, when confirmations arrive faster than they can be scheduled.
How Do You Sort the Queue When You Cannot Serve Everyone at Once?
Three criteria. Apply them in order.
Statutory deadline first. If a factory has a fixed inspection date tied to a regulatory requirement or an insurance condition, that date is not flexible for either side. A missed statutory date is the customer’s problem legally, but in practice it damages the relationship and may create a claim against the contractor. These visits go first in the queue regardless of scheduling difficulty.
Contract window second. Most maintenance agreements specify a visit window rather than an exact date: “within 14 days of the agreed month” or “once per quarter, confirmed 2 weeks in advance.” If the contract window closes in April and the visit cannot be completed in April, the contractor is in breach. Review each contract’s terms before rescheduling anything.
Agreed date last. If a visit was scheduled by mutual agreement with no contractual deadline attached, it is the most flexible item. Rescheduling a preferred date costs less than rescheduling a contract deadline.
A worked example: ten technicians, four installation jobs running in April, leaves approximately 30 free technician-days in the month. Nine maintenance visits are due, ranging from half a day to one and a half days each. Total maintenance demand: around 10 technician-days. The math fits, but only if scheduling starts in February, not March.
The question is not whether to fit nine visits into April. It is which nine, in what order, and with buffer for the two that will need rescheduling when factory access shifts at the last minute.
What Do You Tell a Client Whose Visit Has to Slip?
Early notice converts most delays from problems into plans. A delay disclosed four weeks in advance is a schedule adjustment. The same delay disclosed one week in advance is a broken commitment.
Three things to communicate when rescheduling:
- The earliest available date outside the peak window, stated specifically. Not “sometime in May” but “the week of 12 May.”
- A short reason that acknowledges the pressure without placing blame on other clients.
- Confirmation in writing that the visit scope is unchanged: same inspection items, same report format, no reduction in what the client is owed.
What not to do: confirm the original date, then reschedule once, then reschedule again. Two reschedules destroy trust. Better to acknowledge the constraint once, commit to a realistic new date, and hold it.
Why Does the Crunch Catch Teams Off Guard Every Year?
The compression is predictable once you have seen it twice. The reason teams are still surprised is that the information that would reveal it is scattered: visit confirmations in a LINE group, agreements in individual files on the office computer, reminders in the manager’s calendar.
No one can see April’s maintenance demand in January because no one has assembled the data to look at it. The sites due in April are not visible alongside the available technician-days for April.
The fix is a calendar that shows scheduled visits by site and date, updated when visits are confirmed, rescheduled, or completed. A live view of that calendar in January reveals the April compression with enough lead time to redistribute some visits into March or early May before factories make firm plans.
A site register that carries the next visit date for each site in the portfolio is the raw material for that view. It does not need to be sophisticated: a list of sites, the last visit date, the next visit date, and the contract window for each one. Reviewed monthly, that list shows the crunch approaching.
FAQ
What if a factory’s statutory inspection date has already passed before you can schedule the visit?
Document the delay clearly: when you attempted to confirm access and what the factory’s response was. If the missed date was caused by the factory’s own scheduling restrictions, that record protects you. If it was caused by your team’s capacity, acknowledge it promptly and offer the next available date without waiting for the client to follow up.
Can you batch two factory visits in one day to get through the queue faster?
Yes, if travel time and site access allow. Geographic batching works well: two factories in the same industrial estate or district on the same day reduces dead travel time significantly. Confirm access windows with both factories before committing to the schedule. A same-day batch falls apart if either factory is unavailable on arrival.
How far ahead should you start confirming April visit dates?
Eight weeks is workable for most Thai factory clients. Confirming in early February for April visits gives the factory time to prepare access, and gives your team time to move visits to March or early May if the April window fills before everyone is confirmed.
Field Operation System keeps the inspection calendar and the technician board in the same view, so the April compression appears in February when there is still time to act. The TRACE 30 program explains how the inspection calendar and site register work together, or you can schedule a call to walk through how it applies to your current portfolio.