in harness

Idioms  

1. On duty or at work. For example, Despite his illness he's determined to continue in harness. It also is put as be back in harness, meaning “to return to duty or work,” as in After a long vacation she's finally back in harness. This expression alludes to horses harnessed to perform work. [First half of 1800s] Also see die with one's boots on (in harness).

---

Example Sentences

She grew up in Saratoga Springs, N.Y., which is known for thoroughbred racing, but her family was involved in harness racing and she never wanted to be a trainer anyway.

From Los Angeles Times • May 3, 2026

France-based stars Marcos Kremer and Juan Cruz Mallia, who missed the two Test defeats by England in July, are back in harness, while eight of the starting XV are established Prem performers.

From BBC • Nov. 23, 2025

Bit wear on two of the mares also suggested they were used under saddle or in harness and for breeding.

From Science Daily • Mar. 22, 2024

Thousands of his supporters in the usually sleepy northern Serbian town of some 47,000 people also converged on the local horse racing track where Jokic was watching his family-owned horses compete in harness races.

From Seattle Times • Jun. 18, 2023

On such a surface, and going up and down slopes and gullies, we found it best to go one in harness pulling and one behind pushing.

From "The Left Hand of Darkness" by Ursula K. Le Guin

Related Words

• engaged
• hired
• occupied