To labor
toil, slave, sweat, do a day's work, do the chores, exert oneself, apply oneself, do one's best, overexert, overwork, overstrain, get to work, work overtime, work day and night, work early and late, work one's way up, fight one's way up, tax one's energies, pull, plod, tug, chore, struggle, strive, carry on, do the job*, punch a time clock*, put in time*, pour it on*, not spare the horses*, work one's fingers to the bone*, buckle down*, bear down*, work like a horse, work like a dog, work like a slave*, keep at it*, stay with it*, put one's shoulder to the wheel*, burn the candle at both ends*, burn the midnight oil*; see also fight 1.
To be employed
earn one's living, earn a living, have a job, hold a position, occupy a post, report for work, be off the dole, be off the welfare rolls, be among the gainfully employed, be on the job, do time*, do one's stint*, be working on the railroad*, be a wage slave*.