* Identify the Change Requirement: The engineering department wants to replace a highly regulated imported chemical with a domestic, non-hazardous alternative.
* Evaluate the Impact:
* Assess the cost implications of switching chemicals, including sourcing, handling, and compliance costs.
* Consider the impact on production processes, product quality, and customer acceptance.
* Total Cost Analysis: Performing a comprehensive total cost analysis will provide a clear picture of all associated costs, ensuring that the decision is financially sound and aligns with the company's strategic objectives.
* Subsequent Steps: If the cost analysis is favorable, update project timelines, check supplier certifications, and notify customers. References:
* Total Cost of Ownership (TCO) Analysis Frameworks
* Chemical Supply Chain Management
* Best Practices in Supplier Evaluation and Selection

The financial index that may be used to infer the typical mark-up percentages used by a firm is D. Gross profit margin. The gross profit margin is a financial metric that reflects the percentage of revenue that exceeds the cost of goods sold, which is essentially the mark-up over the cost1. It is used to assess a firm's financial health by indicating how much profit the company makes for each dollar of sales after paying for the production of the goods.

To improve the situation where stakeholders request more items despite achieving lower per-item costs, the best long-term approach is to work with leadership to implement a more effective demand management program. This program would help in managing and controlling the demand for items, ensuring that the total expenditures do not increase unnecessarily. It involves planning, monitoring, and controlling the usage and requisition of goods and services to align with organizational goals and budgets.
References
* CIPS (Chartered Institute of Procurement & Supply). Demand Management in Procurement.
* ISM (Institute for Supply Management). Strategies for Effective Demand Management.

The issue of a supplier not maintaining a steady workforce indicates a failure to assess labor stability during supplier performance evaluations:
* Labor stability: Evaluating the supplier's ability to maintain a steady workforce would have highlighted potential issues affecting continuity and reliability.
* Quality metrics: Important, but this issue pertains to workforce stability.
* Financial stability: While crucial, it does not directly address the problem of workforce fluctuations.
* Business continuity: Broadly relevant, but labor stability is a more specific indicator of the workforce
* issue.
Therefore, the manufacturer likely failed to examine labor stability.
References:
* Supplier performance evaluation best practices.
* Risk management in supply chain literature.