business as usual

Short definition from Wiktionary

Noun

1. 1
   The normal course of an activity, particularly in circumstances that are out of the ordinary.
2. 2
   The normal execution of standard functional operations within an organisation, particularly in contrast to a project or program which would introduce change (although that change may itself become business as usual).
3. 3
   Alternative form of business as usual.

Adjective

1. 1
   That is usual, expected, not extraordinary.
2. 2
   Alternative form of business as usual.