Can Shanghai social security base be adjusted at any time?

Legal analysis: the national social security base cannot be adjusted at any time. It can be adjusted not every month, but once a year in July.

Legal basis: Article 3 of the Social Insurance Law of People's Republic of China (PRC) adheres to the principles of wide coverage, basic protection, multi-level and sustainability, and the level of social insurance should be compatible with the level of economic and social development.