hard+at+work
101work/be at full stretch — ► to be working as hard as you possibly can: »OPEC members are at full stretch and cannot pump more oil. Main Entry: ↑stretch …
102Work like a drover's dog — work hard and in a determined way …
103Work one's butt off — work very hard or diligently (from Middle English butt , bott buttock) …
104Work one's guts out — work excessively hard …
105work hard — work with great effort, labor, toil …
106work like a horse — work hard …
107work like a slave — work hard, slave away …
108work like mad — work very hard that it is almost inhuman …
109work out — work hard; complete; calculate, figure out; develop; exercise, exert oneself physically …
110work my fingers to the bone — work so hard that I become thin and weak I worked my fingers to the bone to help my kids get an education …