Japan does have foreign workers, but they are not considered part of its immigration policy. While a small number of foreigners do attain permanent residency status, they virtually never are allowed to become citizens. In 2015, Japan only accepted 27 Muslim refugees for asylum and two of them were quickly arrested for gang rape. In subsequent years, few to none have been granted asylum.
The UN Refugee agency says Japan is home to 2,419 refugees, compared to its Group of Seven ally the United States with 267,222 and Turkey, which has 1.8 million refugees. The country has long been nervous about an influx of refugees into its homogeneous society and has tightly restricted the number it accepts. The Japanese justice ministry said it received a record 7,586 refugee applications in 2015, meaning more than 99% of requests were rejected.
Japan’s decreasing birth rate is not being solved by Western-style mass immigration, but by incentives for native Japanese to have more children. “Diversity” is not something the country sees as beneficial to the health of the economy, nor is so-called “multicultural enrichment” that Western countries use as a selling tool to convince their citizens to accept masses of unproductive, welfare-dependent Muslim immigrants.