hardworking; industrious

Thank you for your hard work.

Thousands of laborers and craftsmen toiled for 22 years to craft the stunning white marble edifice.

He owes his success both to working hard and to good luck.

Nothing in the world is worth having or worth doing unless it means effort, pain, difficulty.

I was never the likeliest candidate for this office. We didn't start with much money or many endorsements. Our campaign was not hatched in the halls of Washington. It began in the backyards of Des Moines, and the living rooms of Concord, and the front porches of Charleston. It was built by working men and women who dug into what little savings they had to give $5 and $10 and $20 to the cause.