casualizationcas‧u‧al‧i‧za‧tion (also casualisation British English) /ˌkæʒuəlaɪˈzeɪʃən $ -lə-/ noun [uncountable] 
1a tendency to make things less formal in places where people work, for example by allowing office workers to wear informal clothes2a tendency for companies to use temporary workers instead of permanent ones
1a tendency to make things less formal in places where people work, for example by allowing office workers to wear informal clothes2a tendency for companies to use temporary workers instead of permanent ones