work your fingers to the bone
US /wɜrk yʊər ˈfɪŋɡərz tu ðə boʊn/
UK /wɜrk yʊər ˈfɪŋɡərz tu ðə boʊn/

1.
bekerja keras, bekerja bersungguh-sungguh
to work extremely hard, often to the point of exhaustion
:
•
She had to work her fingers to the bone to support her family.
Dia terpaksa bekerja keras untuk menyara keluarganya.
•
He's been working his fingers to the bone on this project for months.
Dia telah bekerja keras dalam projek ini selama berbulan-bulan.