In 1977, he became the deputy chairman of the presidium of the Great Khural, in effect second to leader Yumjaagiin Tsedenbal.
He worked in the Tokhoi Tsagaan Bulag limestone quarry from 1937 to 1939, when he was sent to the Central Party and State School.
He was appointed head of the Propaganda and Culture Department of the Central Committee in 1959, and was briefly procurator of the MPR.
[1] In July 1983, Jalan-Aajav was suddenly dismissed from all posts; in February 1984, the MPRP journal Namyn Amidral ('Party Life') published the relevant decrees, in which he was described as an "antiparty element" who allegedly had been involved for 20 years in "vile intrigues" to overthrow Tsedenbal with the help of Tsogt-Ochiryn Lookhuuz, Baldandorjiin Nyambuu, and Bandiin Surmaajav, and with support from Daramyn Tömör-Ochir.
[1][2] After the end of the Mongolian People's Republic in 1992, Jalan-Aajav made a few brief public appearances in the late 1990s before taking up a teaching position at the law school of the Mongolian State University, and was awarded the title Merited Lawyer in December 2001.