Make or Buy Analysis

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The following is the general methods research on Make or Buy analysis:

The make-or-buy decision is the act of making a strategic choice between producing an item internally (in-house) or buying it externally (from an outside supplier). The buy side of the decision also is referred to as outsourcing. Make-or-buy decisions usually arise when a firm that has developed a product or part is having trouble with current suppliers.

Make-or-buy analysis is conducted at the strategic and operational level. Obviously, the strategic level is the more long-range of the two. Variables considered at the strategic level include analysis of the future, as well as the current environment. Issues like government regulation, competing firms, and market trends all have a strategic impact on the make-or-buy decision. Of course, firms should make items that reinforce or are in-line with their core competencies. These are areas in which the firm is strongest and which give the firm a competitive advantage.

The increased existence of firms that utilize the concept of lean manufacturing has prompted an increase in outsourcing. Manufacturers are tending to purchase subassemblies rather than piece parts, and are outsourcing activities ranging from logistics to administrative services. In their 2003 book World Class Supply Management, David Burt, Donald Dobler, and Stephen Starling present a rule of thumb for out-sourcing. It prescribes that a firm outsource all items that do not fit one of the following three categories: (1) the item is critical to the success of the product, including customer perception of important product attributes; (2) the item requires specialized design and manufacturing skills or equipment, and the number of capable and reliable suppliers is extremely limited; and (3) the item fits well within the firm's core competencies, or within those the firm must develop to fulfill future plans. Items that fit under one of these three categories are considered strategic in nature and should be produced internally if at all possible.

Make-or-buy decisions also occur at the operational level. Analysis in separate texts by Burt, Dobler, and Starling, as well as Joel Wisner, G. Keong Leong, and Keah-Choon Tan, suggest these considerations that favor making a part in-house: 1.Cost considerations (less expensive to make the part).

2.Desire to integrate plant operations.
3.Productive use of excess plant capacity to help absorb fixed overhead (using existing idle capacity). 4.Need to exert direct control over production and/or quality. 5.Better quality control.

6.Design secrecy is required to protect proprietary technology. 7.Unreliable suppliers.
8.No competent suppliers.
9.Desire to maintain a stable workforce (in periods of declining sales). 10.Quantity too small to interest a supplier.
11.Control of lead time, transportation, and warehousing costs. 12.Greater assurance of continual supply.
13.Provision of a second source.
14.Political, social or environmental reasons (union pressure). 15.Emotion (e.g., pride).
Factors that may influence firms to buy a part externally include:

1.Lack of expertise.
2.Suppliers' research and specialized know-how exceeds that of the buyer. 3.cost considerations (less expensive to buy the item).
4.Small-volume requirements.
5.Limited production facilities or insufficient capacity.
6.Desire to maintain a multiple-source policy.
7.Indirect managerial control considerations.
8.Procurement and inventory considerations.
9.Brand preference.
10.Item not essential to the firm's strategy.
The two most important factors to consider in a make-or-buy decision are cost and the availability of production capacity. Burt, Dobler, and Starling warn that "no other factor is subject to more varied interpretation and to greater misunderstanding" Cost considerations should include all relevant costs and be long-term in nature. Obviously, the...
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