work your fingers to the bone
US /wɜrk yʊər ˈfɪŋɡərz tu ðə boʊn/
UK /wɜrk yʊər ˈfɪŋɡərz tu ðə boʊn/
1.
to work extremely hard, often to the point of exhaustion
:
•
She had to work her fingers to the bone to support her family.
•
He's been working his fingers to the bone on this project for months.