Definition of "sweated"

“Do you like jennying?” he asked.“What can a woman do!” she replied bitterly.“Is it sweated?”“More or less. Isn’t all woman’s work? That’s another trick the men have played, since we force ourselves into the labour market.”

1913, D[avid] H[erbert] Lawrence, “chapter 10”, in Sons and Lovers, London: Duckworth & Co. […]

So long as the African slave-trade lasted, the importation of slaves being presumably cheaper than breeding them, the industries run by slave labor were economically in much the same position as our own sweated trades […]

1920, Sidney Webb, Beatrice Webb, Industrial Democracy, Part III