Japan Airlines (JAL) says it has mailed pension reduction consent forms to 8,800 former employees, one week after a survey indicated 5,700 would accept reductions.
An individual pensioner's reduction could be up to 30%, though the size of the cut will vary from individual to individual, says a JAL spokeswoman.
The carrier has requested the pensioners to reply by 12 January.
In addition, six former executives of Japan Airlines (JAL) or its subsidiaries have agreed to return part of their retirement benefits, though their identities and the amounts they will return cannot be confirmed, says the spokeswoman.
The airline has also secured 90% approval for a proposed a 50% cut to the pensions of its 17,000 current employees.