The lexicon of the top500 ( The Encyclopedia for Classification Codes ) explains the codes and definitions in the world of economical classifications.
ISIC Code P Private households with employed persons
The ISIC Code P is described as
Private households with employed persons
Description This section includes activities within households, where the same household is the consumer of the products produced. This can be effected through the employment of domestic personnel (division 95) or through the production of goods or services for own use (division 96 and 97).