work like a dog/slave/Trojan

work like a dog

To work very hard. The phrase sometimes implies that the work is demeaning. I've been out here working like a dog while you sit inside sipping lemonade. Can you maybe lend a hand? I worked like a dog all summer to earn enough cash to buy my guitar, and it was all worth it.
See also: dog, like, work

work like a Trojan

work extremely hard.
1974 Winifred Foley A Child in the Forest She put me to clean out all the fowls' cotes, and I worked at it like a Trojan.
See also: like, Trojan, work

ˌwork like a ˈdog/ˈslave/ˈTrojan

(informal) work very hard: She worked like a slave to pass her exams. OPPOSITE: not do a stroke (of work)
See also: dog, like, slave, Trojan, work