hard+work
101work like a dog — If you work like a dog, you work very hard …
102work your fingers to the bone — If you work your fingers to the bone, you work extremely hard on something …
103work your socks off — If you work your socks off, you work very hard …
104work your tail off — If you work your tail off, you work extremely hard …
105work like a dog (to) — Work very hard. ► “All sorts of advertisers now use the same theme: We know you work like a dog, so we work like dogs for you.” (Adweek, May 22, 1995, p. 20) …
106work towards — ˌwork to ˈwards [transitive] [present tense I/you/we/they work towards he/she/it works towards present participle working towards past tense …
107work horse — work|horse «WURK HRS», noun, adjective, or work horse. –n. 1. a horse used for labor, and not for showing, racing, or hunting. 2. Figurative. a very hard worker, especially one able to do many jobs or work long hours. –adj. of, having to do with …
108work|horse — «WURK HRS», noun, adjective, or work horse. –n. 1. a horse used for labor, and not for showing, racing, or hunting. 2. Figurative. a very hard worker, especially one able to do many jobs or work long hours. –adj. of, having to do with, or like a… …
109work up a sweat — work or exercise hard, perspire, break a sweat When I skip, it takes me ten minutes to work up a sweat …
110work (your) arse off — work (your) arse/backside off British & Australian, very informal, American, very informal to work very hard. My father worked his backside off to pay for our education …