What Does a Good Sub-Tier Supplier Management Strategy Look Like?

Article Highlights:

• A lack of visibility makes it more difficult for businesses to maintain relationships with their sub-tier suppliers.
• Businesses interested in fostering robust sub-tier supplier management need to deepen visibility and transparency among their manufacturing networks while also implementing systems for monitoring tier two and tier three suppliers over time. 
• Once an organization has identified their sub-tier suppliers and implemented a strategy for recurring evaluations, they should work to establish a regular communication cadence with them. Companies that are able to maintain ongoing communication with tier two and even three manufacturers enjoy a range of benefits.

When it comes to supply chain risks, suppliers present some of the largest potential threats. For businesses that source from complex global supply chains, their suppliers may introduce risks like financial instability, noncompliance, ESG violations, cybersecurity threats, and production shutdowns. Many original equipment manufacturers (OEMs) take steps to mitigate these risks in their tier 1 suppliers, but it’s often the sub-tier manufacturers that pose the greatest threats. 

Whether a company is prioritizing compliance, ESG, or manufacturing continuity, they should be making sub-tier supplier management a critical element of their supply chain risk management (SCRM) strategy.

What Is Supplier Management?

Supplier management is the practice of using various strategies and tools to oversee, enhance, and optimize the performance of a business’s suppliers. Global consultancy The Hackett Group defines the term as the “strategic process of managing and optimizing an organization’s relationships with its suppliers to ensure consistent quality, performance, and value.”

Given the broadness of the term, a significant number of functions fall within its scope. These include:

• Supplier risk assessment
• Supplier performance evaluation
• Supplier selection and onboarding
• Communication and collaboration
• Information sharing and data transparency
• Data insights and analytics 

Do Sub-Tier Suppliers Pose a Greater Risk Than Direct Manufacturers?

Many businesses focus on mitigating risk in their Tier 1 suppliers. But that decision is often driven more by ease of access than by where the greatest risks actually lie. That’s because companies continue to have substantially more visibility into their tier one suppliers than they do into the sub-tier manufacturers that make up the rest of their supply chains.

In recent survey data published by McKinsey, over 90% of supply chain leaders said that they knew who their tier one suppliers were. A similar percentage of respondents also understood the risks associated with those direct suppliers and held regular meetings with supply chain teams from their tier one manufacturers. For tier two suppliers, those figures dropped markedly: Only 58% of respondents knew who they were, less than half knew the risks they posed, and just over a quarter met with tier two suppliers regularly. The percentages tumbled to a small fraction of all respondents when they were asked about their relationship with their tier three suppliers: only 15% knew who they were, less than one in 10 knew their risks, and an equally small percentage of respondents met with them regularly. 

But while practical limitations mean that OEMs tend to have stronger visibility and oversight with their direct suppliers, many of the gravest risks are embedded in sub-tiers. That’s because sub-tier suppliers tend to be smaller manufacturers with less regulatory oversight and fewer internal governance or guardrails. In addition, these smaller, predominantly private companies often have more precarious financial profiles than larger, more public manufacturers. This leaves them more vulnerable to bankruptcy and other fiscal challenges, while also making them more willing to push legal and ethical boundaries in order to consistently turn a profit. Finally, private manufacturers operating in the sub-tier do not have to disclose nearly as much data as their public counterparts, leading to a lack of data transparency that can be challenging for OEMs to navigate. 

The bottom line: supplier management is primarily focused on tier one because of logistical limitations, rather than any specific strategic insight. But if organizations want to manage risk, optimize performance, and strengthen supply chain resilience, they need to invest in sub-tier supplier management, too. 

The percentages tumbled to a small fraction of all respondents when they were asked about their relationship with their tier three suppliers: only 15% knew who they were, less than one in 10 knew their risks, and an equally small percentage of respondents met with them regularly.

Strategies for Strengthening Sub-Tier Supplier Management

Businesses interested in fostering robust sub-tier supplier management need to deepen visibility and transparency among their manufacturing networks while also implementing systems for monitoring tier two and tier three suppliers over time. 

Enhance Supply Chain Visibility With Supplier Mapping

In order to effectively manage sub-tier suppliers, OEMs need to know who they are. This is why supply chain visibility is a foundational element of an effective sub-tier supplier management strategy. Strong visibility allows organizations to see beyond their direct suppliers, shedding light on the broader, deeper webs that connect consumer businesses to suppliers to the firms responsible for producing the raw materials that sustain global manufacturing. 

By utilizing supply chain visibility, organizations are able to map out supplier relationships that go to the second, third, and even fourth tiers. This provides them with the intelligence they need to start enacting supplier management measures, whether that be through recurring communication, contractual obligations, or ESG expectations. Whatever a business chooses to focus on, establishing sub-tier supply chain visibility is an indispensable first step that allows all other subsequent management actions to be implemented. 

Organizations can take several steps in order to establish direct and sub-tier supply chain visibility. This starts with supplier mapping, and companies can use their existing data to begin the mapping process. In addition, campaigning tier 1 suppliers can help them flesh out their second and even third tiers. Given the level of supply chain insight and intelligence required for mapping, however, a supply chain risk management (SCRM) platform is often an essential resource for businesses looking to effectively execute this project. The best SCRM software can analyze millions of data points to inform and verify relationships between direct suppliers and their sub-tier manufacturers, producing detailed maps that can then serve as the foundation for robust sub-tier supplier management.

Evaluate Sub-Tier Suppliers for Hidden Risks

To effectively manage sub-tier suppliers, OEMs should have a multifaceted system in place for evaluating them. Suppliers that are not held accountable on a regular basis have little incentive to improve their operational efficiency, leading to serviceable and sometimes even substandard performance. Supplier evaluations can cut away at that complacency: sub-tier manufacturers being analyzed and assessed by downstream customers will often perform to a higher standard because they know there are stakes attached to the quality of their manufacturing, the speed of their delivery, and the consistency of their regulatory adherence.

These sub-tier supplier evaluations should be objective, systematic, and repeatable, ensuring that all sub-tier entities are analyzed fairly and according to the same criteria. Examples of evaluation criteria include:

• Costs compared with industry benchmarks
• Consistency and timeliness of product delivery
• On-site assessments
• Environmental and trade compliance
• Annual disruptions

Businesses can consolidate and codify this criteria using an official “best practices” document that includes key performance indicators (KPIs), and is disseminated throughout their supply chain. It’s also worth noting that these evaluations possess value that goes beyond the incentive structure they impose on manufacturers. OEMs can review the results of these assessments with their sub-tier suppliers, collaborating with all supply chain stakeholders to strengthen processes, reduce inefficiencies, and mitigate the overall risk profile of partner organizations. 

Establish Regular Communication

Once a business has identified their sub-tier suppliers and implemented a strategy for recurring evaluations, they should work to establish a regular communication cadence with them. OEMs that are able to maintain ongoing communication with tier two and even three manufacturers enjoy a range of opportunities not available to organizations hampered by black-box supply chains that go dark after the first tier. This type of scheduled, recurring communication can create a range of benefits for companies willing to invest the time, strengthening processes and risk management across supplier networks:

• Supply Chain Transparency: One of the primary objectives of sub-tier supplier management is transparency. Communicating with sub-tier entities regularly allows them to share information about their site risks, manufacturing processes, compliance, and other variables that can cause supply chains to either be throttled or thrive. 

• Optimization Across Stakeholders: More consistent communication between OEMs and their sub-tier suppliers can pave the way for enhanced efficiency across manufacturing networks. Organizations that talk to their manufacturers increase their chances of spotting redundancies, reducing overhead through targeted modifications, or adding a fresh perspective to old processes.

• Risk Sensing: Whether it’s through emails, phone calls, or teleconferencing, companies that bolster their communications with sub-tier businesses give themselves a larger window into those companies’ operations. This visibility allows for OEMs to identify potential blind spots and other vulnerabilities, including noncompliance risks, production dependencies, or geopolitical instability. This kind of “risk sensing” can be a vital information pathway for organizations, giving them the data and rationale to build supply chain risk management (SCRM) measures customized specifically for their suppliers.

Once a business has identified their sub-tier suppliers and implemented a strategy for recurring evaluations, they should work to establish a regular communication cadence with them.

Practice Strong Sub-Tier Supplier Management With Z2

Many U.S. manufacturers struggle with an immense blind spot: though they can only identify fragments of their sub-tier, it’s those tier two and tier three entities that pose the greatest risk to their production continuity. Organizations that want to foster lasting, substantive supply chain resilience need to go beyond their direct suppliers, to the sub-tier networks where invisible risks proliferate. This is why sub-tier supplier management is arguably more important than ever. 

SCRM software Z2 gives businesses a powerful foundation for effective sub-tier supplier management. The platform combines multi-tier supplier discovery, network intelligence, customer exposure mapping, and real-time risk monitoring to help companies identify and manage risks embedded deep within their supply chains.

• Relationship Discovery From Verifiable Sources: Z2 analyzes millions of global sources and billions of data points to identify supplier, site, and part relationships. Sources include bills of lading and trade data, product change notices (PCNs), company websites, product documentation, financial filings, ESG disclosures, and supplier communications. This enables organizations to uncover supplier relationships that would otherwise remain hidden deep within their supply chains.

• Data Hygiene and Entity Normalization: Suppliers, manufacturing sites, and ownership entities are standardized within Z2’s canonical data model to resolve aliases, parent-subsidiary relationships, and duplicate records. This ensures supplier data is accurate, consistent, and usable for multi-tier supply chain risk analysis.

• Supplier Network Mapping and Relevance Scoring: Verified relationships are linked to construct supplier networks across multiple tiers. Z2’s multi-tier mapping intelligence can go quite far, often reaching 10-14 tiers in certain supply chains. Each relationship is enriched with commodity and manufacturing-role context and scored based on source quality, recency, and corroboration. This helps organizations prioritize risks and opportunities in their supplier relationships.

• Customer BOM and AVL Integration with Z2 Intelligence: Customer BOMs and approved vendor lists anchor supplier networks to real exposure. The platform overlays Z2 intelligence with customer data and allows suppliers to validate relationships, enabling both intelligence-based and customer-verified network views. This connects supplier intelligence directly to a company’s actual supply chain dependencies.

• Real-Time Supply Chain Risk Event Monitoring: Finally, Z2 features monitoring of over 120 different risk types, giving companies an evolving window into the natural disasters, labor strikes, cyber incidents, trade disruptions, and geopolitical conflict that trigger bottlenecks, shutdowns, and other disruptions. This allows organizations to detect disruptions early and respond before they escalate into supply chain failures.

To learn more about Z2 and how it can inform a robust sub-tier supplier management strategy, schedule a free trial with one of our product experts.