hard at work
Labouring with great effort and diligence; working hard.
I'm sorry I can't make it to the party—I'm going to be hard at work all day.
Far and away the best prize that life has to offer is the chance to work hard at work worth doing. Theodore Roosevelt
The typical journalist's typical lead for the typical Canadian story nowadays is along this line: that Canadians are hard at work trying to gain a reputation as a nation of rapid social change. Stockwell Day
Besides, when not hard at work with this research, I'm actually conducting a side experiment on how cigarettes and gin increase charisma. As you might guess, the results are looking very promising. Richelle Mead
No man needs sympathy because he has to work, because he has a burden to carry. Far and away the best prize that life offers is the chance to work hard at work worth doing. Theodore Roosevelt
On Capitol Hill, House Republicans have been doing our part. We've been hard at work developing policies that will help empower all Americans. We're beginning to see results. We reduced taxes for everyone. Dennis Hastert
The next generation of innovators, who need neutrality the most, are not at the bargaining table. They're hard at work in their labs or classrooms, dreaming of the next big thing, and hoping that the Internet is as open to them as it was to the founders of Google. Edward Felten