What does “Burn the midnight oil” mean?
To work or study late into the night.
Main example sentence
“The engineering team burned the midnight oil to prepare the product release.”
How and when to use it
Use it to describe a period of late-night concentration rather than ordinary evening activity. It can praise dedication, but it may also imply pressure or poor planning. The phrase is informal enough for conversation and colorful workplace writing, though direct wording is better when hours or safety need to be documented.
More natural examples
- We burned the midnight oil to finish the exhibition catalogue.
- She has been burning the midnight oil before her final exams.
- The developers burned the midnight oil during the last week of testing.
- I would rather start early than burn the midnight oil again.
Praise, pressure, or both
Depending on context, the phrase can admire persistence or hint that the workload was excessive. It should not automatically be treated as proof of good productivity.
Use precise language for actual working hours
In schedules, payroll, or safety discussions, say exactly when and how long people worked. The idiom is descriptive, not a substitute for accurate records.
Late work is not a wellbeing strategy
The expression describes behavior rather than recommending it. Repeated loss of sleep can affect health, judgment, and performance.