work like a dog/slave/Trojan
work like a dog
To work very hard. The phrase sometimes implies that the work one has been doing 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.
work like a Trojanwork 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.