A phenomenon that quickly turns otherwise accurate forecasts into far-reaching supply chain inefficiencies, the bullwhip effect refers to the increasing swings in inventory — in response to shifts in customer demand — as one moves further up the supply chain.
Accustomed to seeing ample supplies of diapers, toilet paper, and cleaning products on store shelves, consumers were in for a shock when COVID-19 began to take its toll on the world’s supply chains in early 2020. Although the barest of shelves began to rejuvenate by midyear, there are still some lingering effects (plus the potential for more shortages later in the year and into 2021).
Blame the bullwhip effect for creating a lot of this chaos and uncertainty.
“Supply chains allow companies to focus on their specific processes to maintain maximum probability,” Osmond Vitez writes in The Bullwhip Effect in Supply Chain. “Unfortunately, supply chains may stumble when market conditions change and consumer demand shifts.”
Here’s what companies should be doing now to avoid supply chain disruption in the future.
5 Supply Chain Takeaways for 2021
Under “normal” circumstances, companies invest in extra capacity, inventory, labor and work shifts to minimize the bullwhip effect or to avoid it altogether. The problem this time around is that otherwise routine approaches didn’t work. Demand sensing, forecasting and other forward-looking predictions were equally as ineffective, and mainly due to the unprecedented nature of the global pandemic.
Here’s the good news: shippers now have boots-on-the-ground experience with a fairly extreme case of the bullwhip effect. Using their 2020 experience as their guide, companies can now prepare for the next potential disruption with a better understanding of the hefty impacts that it could have on their global supply chains.
Here are five lessons that all companies should apply toward their future supply chain management:
- Communication, data sharing, and visibility trump all when it comes to minimizing the bullwhip effect. One large national retailer, considered to be a leader in supply chain strategy, opened the lines of communication by allowing suppliers to access their inventory data. The result: increased customer satisfaction, a decrease in inventory and warehousing costs, and more stable supply lines.
- Third-party logistics experts have proven their worth. Well equipped to handle the logistics, transportation and technology that go into a well-oiled supply chain, experts like Transportation Insight know both sides of the business (i.e., shipper and carrier), and we can demonstrate and articulate how each node in the supply chain will benefit from a specific decision.
- Scenario planning and simulations actually work. Think of them as the “war games” of your own supply chain, use them to run simulations on historical data across different hypothetical scenarios (e.g., if we can’t get raw materials from country A, how will it impact the rest of the supply chain?). Getting the answers to these questions before a disruption occurs will help you be more prepared in the event of a disruption.
- Use dashboards and control towers to get big-picture views in real-time. The days when a warehouse manager had to wait until the end of the month for a printed performance report are long gone. Thanks to advancements in technology, the same manager can get that information in real-time and then use it for good decision-making. Being able to drill down into order profits, for instance, will help you better understand what you should actually be charging for shipping. This, in turn, helps support good margin management in any business conditions.
- Alternate sources of supply are a good thing to have. In surveying 150 senior manufacturing executives, law firm Foley & Lardner found that most expect to make “fairly drastic” changes to their supply chains post-pandemic, including a shift away from just-in-time manufacturing (JIT) and sourcing in China. In Global Supply Chain Disruption and Future Strategies Survey Report, the law firm says that of those companies that were operating in China pre-pandemic, 59% have either already withdrawn operations, are in the process of doing so, or are considering it. Many of those organizations are looking to reshore their operations closer to home in the U.S., Canada, or Mexico.
Depending on how you approach it, transportation can play a major role in avoiding the bullwhip effect in your supply chain. Through good communication and data-sharing across all supply chain partners, you’ll gain an understanding of both real-time and historical information as it relates to all points in the supply chain. The better decisions you can make, the better the odds of avoiding the bullwhip effect.
Tame the Bullwhip: Manage the Demand Waves
We examine the steps you can take to build a responsive supply chain management system in our latest Supply Chain Masters Series digital event.
Watch the webinar to learn best practices for collecting, retaining and analyzing supply chain data. We also highlight the business intelligence solutions that drive continuous improvement and proactive strategy adjustment.
Click the link below to learn supply chain strategies that minimize risk and protect your profitability today and tomorrow.