Dar el callo

to work one's socks off; **to work one's socks off**; **to graft** (British English); **to put in the hard work**; **to work hard**; **to pull one's weight**

Dar el callo means to work very hard, put in a great deal of effort or do one's fair share of the work.

It often suggests perseverance and willingness rather than brilliance.

• works tirelessly
• makes a serious effort
• contributes fully to a project
• earns results through hard work
• does not avoid difficult tasks

The expression comes from callo, the hardened skin that develops after repeated manual labour.

Having calluses on one's hands was traditionally seen as proof of honest work.

To dar el callo therefore came to mean working hard enough to earn those calluses.

Today, the expression is used for both physical and intellectual work.

The expression usually conveys admiration.

It praises effort, perseverance and reliability.

Spanish speakers often contrast people who dan el callo with those who avoid work or expect others to do it for them.

Spanish has several expressions built around the idea of hard work:

• Dar el callo → to work one's socks off.
• Currárselo → to put a lot of effort into something.
• Hincar los codos → to study hard.
• No dar un palo al agua → not to do any work at all.

Together, they cover almost every attitude towards work, from complete dedication to complete laziness.

Do not translate the expression literally.

English speakers would never say:

He gave the callus.

Instead, use expressions such as:

• He worked his socks off.
• She put in the hard work.
• They pulled their weight.
• He grafted. (British English)

The important idea is sustained effort.