The JICPA developed its Code of Ethics in conformity with that of the International Ethics Standards Board for Accountants (IESBA). In addition to the requirements in the IESBA's Code of Ethics, the CPA Act of Japan prohibits CPAs to engage in continuous long-term audits of companies that fall under the definition of "large companies, etc. " under the CPA Act. Specifically, the CPA Act, Order for Enforcement of the CPA Act and Regulations for Enforcement of the CPA Act stipulate that key audit partners must rotate every seven accounting periods with a two-year cooling off period. In the case of a "lead engagement partner, etc. " of certain audit corporation, such partner must rotate every five accounting periods with a five-year cooling off period. Furthermore, CPAs are strictly prohibited from working for the companies that they have served as independent auditors until the end of the following accounting period of their resignation.
JICPA Code of Ethics:https://jicpa.or.jp/specialized_field/ethics/#shosoku (Japanese only)