Business as usual
Definition 1 of 1
Pro Tip 1/3Context Matters
Understand the situation to use 'business as usual' correctly—it's about continuity after interruptions. 
After the power outage, the supermarket resumed business as usual.
Pro Tip 2/3Not Literal
'Business as usual' can refer to routines in life, not just commerce or work environments. 
The family tried to keep things business as usual after moving to a new city.
Pro Tip 3/3Unexpected Normalcy
The phrase often implies that things are normal when it wouldn't typically be expected. 
Even during the festival, it was business as usual at the pharmacy.