Columbia subject headings:
Labor--Social aspects--Early works to 1800.
Social structure--Early works to 1800.
Work--Moral and ethical aspects--Early works to 1800.
Work--Philosophy--Early works to 1800.
Harvard subject headings:
Work--Early works to 1800.
Work--Moral and ethical aspects--Early works to 1800.
Princeton subject headings:
Labor--Social aspects--Early works to 1800.
Social structure--Early works to 1800.
Work--Moral and ethical aspects--Early works to 1800.
Work--Philosophy--Early works to 1800.