Từ đồng nghĩa của working day and night

burning the midnight oil toiling bearing down burning the candle at both ends cramming doing double duty elucubrating grinding keeping your nose to the grindstone lucubrating overworking pulling an all-nighter staying up studying sweating and slaving toiling away working hard working late working like a dog working overtime

slogging toiling slaving plodding labouring plugging grinding grubbing working drudging grafting moiling pegging ploughing travailing working hard bullocking endeavouring endeavoring exerting oneself humping hustling laboring persevering plowing straining striving struggling sweating tugging keeping at it slogging away banging away beavering away digging away dragging hiking killing oneself knocking oneself out pegging away schlepping sweating blood trailing trampling working like a dog working like a Trojan applying yourself to bearing down buckling down pegging away at ploughing through keeping your nose to the grindstone working your fingers to the bone working one's butt off plugging away knuckling down driving slaving away plodding away going for broke pushing oneself keeping your head down pushing yourself grinding away grubbing away going for it busting a gut bending over backwards breaking your neck knocking yourself out rupturing yourself trudging making an all-out effort giving it your all giving it your best shot exerting yourself working your guts out going ham going hard going all out fighting skivvying pushing mucking groveling grovelling trying breaking one's back applying oneself carrying on enduring scrambling withstanding campaigning working fingers to bone acquiting yourself battling standing up to making every effort hammering away putting one's back into something pitching in plodding along grinding out making a great effort digging in working one's socks off going to war putting up a fight against grafting away applying yourself getting down to it doing your damnedest putting effort into something getting your head down putting in effort plowing away putting in work putting effort trying hard making an effort pulling out all the stops leaning over backwards doing all one can persisting doing your utmost putting oneself out sparing no effort doing your best soldiering on pouring it on working away going for the doctor falling over backwards hammering working oneself to the bone doing one's best chipping away attempting undertaking seeking aspiring aiming assaying essaying venturing lumbering staggering sticking at pressing on sticking with it making a supreme effort keeping going burning the candle at both ends leaving no stone unturned doing all you can grappling breaking sweat busting chops overworking taking on keeping on exerting driving oneself pegging along moving heaven and earth plugging along putting one's back into it giving your all sweating away dragging yourself drudging away applying working like a slave having a crack at suffering banging on overworking oneself working very hard heading-down tending cultivating emptying the tank going all-out for going the whole nine yards going all-out going hammer and tongs going all out for pushing oneself to the limit tolling straining every nerve driving oneself to the limit trying very hard having a crack taking pains purposing working hard to having a stab at jumping through hoops offering jockeying trying for having a go at going for the jugular giving it a whirl competing tackling going the limit contending shooting for sticking to it keeping nose to grindstone digging performing pounding killing oneself with giving best shot making effort giving all one's got persisting with persevering with toiling away soldiering on with keeping on with having a shot at trying one's hardest having a swing at making a run at having one's nose to grindstone

overdoing it overworking sweating doing too much overburdening oneself overloading oneself overtaxing oneself straining oneself sweating blood working too hard working like a horse working like a slave working like a Trojan burning the midnight oil killing oneself wearing oneself out driving oneself too hard knocking oneself out pushing oneself too hard burning the candle at both ends running oneself into the ground wearing oneself to a shadow working oneself into the ground having too many balls in the air having too many irons in the fire biting off more than one can chew driving oneself into the ground working your fingers to the bone labouring overtasking straining practicing presenteeism overstraining overextending working one's tail off biting off more than you can chew overloading laboring straining yourself overtaxing yourself overdoing things overexerting yourself working one's fingers to the bone

working days working doggedly working double working end working environment working example working day working correctly working conditions working closely working close working-class person