Another factor to consider is how long the personnel are absent.
How is the work flow disrupted? Can remaining personnel work or is this missing person's function critical for the rest of the process? Does the absence of one person shut down the entire plant or only some small segment which can be made up within a short time after the missing person returns?
For practical reasons, small companies do not have a lot of extra workers to fill in for missing persons. The result is one of two choices:
- other workers expand their duties to pick up the function of the missing person in addition to their own functions.
OR
- the work and function lay idle until the person returns (sometimes necessary for special expertise like welding or programming a computerized machine tool.)
The organization may have a plan in place to find or hire an expert to fill in temporarily while they search for a new full time person if the original person's absence is due to long term illness or death or permanently leaving the organization for any reason.
What a customer looks for is a supplier who has the foresight to think of this contingency (a form of Failure Mode & Evaluation Analysis [
FMEA]) and to have a plan in place to provide for continuation of the business. Some customers also ask for a risk analysis of contingency plans if fire or natural disaster occurs and stops business (think hurricanes and earthquakes.)
These contingency plans are critical to a customer who is entrusting production of a custom-made product to a single supplier.
An acceptable contingency plan:
Estimate maximum time of business interruption due to various causes and offer to maintain "safety stock" at an off-site location to assure customer uninterrupted delivery. During that period, maintain constant communication with customer regarding status so customer can seek an alternate source if the disruption will last beyond the "safety stock" period. Some suppliers use this technique as a normal course of business by shipping ALL production to an off-site warehouse for FIFO delivery to the customer. If there is a disruption, supplier works overtime to build the safety stock back up to "pre-event" levels once the supplier is back in production.
(this can play havoc with a Kanban or JIT system, but may be necessary to assure continued production at customer.)
So, using the safety stock concept:
If the disruption is minor and due only to sick or injured personnel being away from job for short period, sufficient safety stock may be held on site to assure customer unhindered flow of product. As the disruption escalates, supplier taps the off-site saftey stock and implements other plans to get back in production
(hire temporary help, recruit new personnel, rent new premises and equipment to replace damaged equipment, outsource entire production to backup supplier, etc.)
Above all, it is important to remember the primary reason for these plans is the continued survival of the supplier's business, coincidentally assuring the customer continued flow of goods.
It is generally not considered good form for a customer to demand access to contingency plans of suppliers who sell commodities. The customer is normally allowed to intrude on the private plans of the supplier only for suppliers of custom goods. The theory is the customer can always go to another source for a commodity, but has a difficult time getting another supplier ramped up to make a custom product.
For this reason, many customers "
double source"
[or triple or quadruple] custom products just to :ca: if one supplier has an event which stops production.