He is a hard worker.

He's not lazy. On the contrary, I think he's a hard worker.

He is honest and hardworking, but his brother is quite otherwise.

We often hear it said that the Japanese are good workers.

He was a hard worker in his youth.

We often hear it said that the Japanese are good workers.

Generally speaking, Japanese are hard workers.

Mark was a work horse on his construction crew.

That hard working boy is bound to succeed.

You're really a hard worker.

When he was young, he was a hard worker.

Tom is a hard worker.

You're a real hard worker.