Foreign residents across Japan are facing an unexpected household challenge as a nationwide shortage of naphtha—a key petroleum product—has disrupted the production of everyday plastic items, with garbage bags becoming particularly scarce in some regions. According to NHK, Japan's domestic production of ethylene and other major petrochemical products increased in April compared to the previous month across multiple categories. However, the Japan Petrochemical Industry Association noted that production levels remain critically low overall. The modest increase was attributed to production facilities resuming operations after scheduled maintenance, but ongoing shortages of naphtha, the essential raw material for plastic production, continue to constrain output. Yahoo Japan Business reported that while ethylene production rose by 3.6 percent, the operating rate of production facilities hit record lows, indicating that manufacturers are struggling to maintain normal production capacity despite efforts to increase output. This discrepancy between production growth and facility utilization reveals the severity of the supply chain disruption affecting Japan's petrochemical industry. The impact on daily life has been immediate and visible. Livedoor News documented that supermarkets in Sapporo have experienced complete sellouts of garbage bags, with empty shelves reflecting growing consumer anxiety about the shortage. This phenomenon is not isolated to Hokkaido—Yahoo Japan Business noted that the appearance of supermarkets nationwide has dramatically changed as plastic products become increasingly difficult to source. For expats living in Japan, this shortage presents practical challenges beyond just garbage disposal. Naphtha serves as the foundation for manufacturing numerous plastic products used in daily life, including food packaging, shopping bags, and various household items. The shortage could potentially affect product availability and prices across multiple categories in the coming weeks. The root cause of this crisis lies in Japan's dependence on imported naphtha and disruptions to global supply chains. As a petroleum derivative, naphtha availability is closely tied to crude oil refining operations and international trade flows. While chemical manufacturers have restarted facilities following maintenance periods, the limited availability of raw materials means production cannot return to normal levels quickly. Experts suggest that the situation may persist in the short term as supply chains gradually stabilize. The petrochemical industry is working to secure additional naphtha supplies, but the complex nature of global petroleum markets means quick solutions are unlikely. For foreign residents, several practical steps can help navigate this shortage. Consider purchasing garbage bags and essential plastic products when available, though avoid panic buying that could exacerbate shortages for others. Some municipalities may offer alternative waste disposal solutions if standard garbage bags become unavailable—check with your local ward or city office for guidance. Additionally, this may be an opportune time to explore reusable alternatives where possible. Many Japanese retailers offer durable shopping bags, and reducing reliance on disposable plastic products can help household budgets while supporting environmental goals. The shortage also highlights Japan's vulnerability to supply chain disruptions in essential materials. As the country works to address immediate production challenges, longer-term discussions about supply security and alternative materials may gain prominence in public policy debates. While the situation is concerning, Japan's petrochemical industry has experience managing supply disruptions, and production is gradually increasing. However, expats should remain aware that plastic product availability may be limited in the near term and plan accordingly. Monitor local news sources and be prepared to adjust household routines as the situation develops over the coming months.