It is responsible for the "enactment, amendment and repeal of ordinances, budgetary decisions, approval of account settlements, matters of financial importances including acquisition and disposal of city assets, and others.

"[2] The assembly has a regular membership 81 members, with 41 needed to form a majority.

The municipal government consists of 24 electoral districts, representing the 24 administrative wards of the city.

[4] Members meet quarterly for the regular assembly, additional extraordinary sessions are also held.

There are six standing committees of the Osaka municipal government: Finance and General Affairs, Education and Economic Affairs, Public Welfare and Health, Planning and Fire Defense, Construction and Port, and Transport and Waterworks.