all in a days work

all in a day's work или all in the day's work  {adj. phr.},  {informal}

Ожидаемо неприятный или плохой; не более трудный чем обычно; не необычный.

Keeping ants away from a picnic lunch is all in the day's work.

When the car had a flat tire, Father said that it was all in a day's work.

Ср.: PAR FOR THE COURSE, PUT UP WITH.