The pilots of Japan Airlines (JAL) have collectively signed a pledge to abstain from alcohol. This follows a number of incidents in recent years where inebriated pilots have caused flight delays. Though details of the pledge have not been released, it seems to be a proactive step from JAL to prevent further incidents and assure passengers of their commitment to safety.
Alcohol-related incidents involving pilots have been a concern in Japan, causing public outcry for stricter policies. The decision from JAL resonates with the common Japanese value of collective responsibility. It also speaks to the considerable importance placed on safety and public trust in the country's service industry.
In the US or EU, individual airlines have different policies regarding alcohol consumption by crew members. The FAA imposes an 8-hour "bottle-to-throttle" rule, but there isn't necessarily a collective pledge like this one. However, similar incidents have also given rise to calls for stricter rules and better enforcement.