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What does "Burning the Midnight Oil" Mean?

Michael Pollick
Updated May 23, 2024
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The idiom burning the midnight oil can be traced back at least to 17th century England, and means to work on a project or endeavor through the overnight hours. Before the invention of the electric light, most lamps used for illumination were fueled by oil. These lamps were customarily extinguished during the early evening hours as most people prepared for bedtime. Those who worked late into the evening would literally be burning the oil late at night.

An English author named Frances Quarles referred to burning the midnight oil in a book called Emblemes, published in 1635. Quarles writes about "mid-day sweat or mid-night oyle" when referring to the human trait of working too hard. Working by the light of a candle or oil lamp was not considered an unusual activity during Quarle's time. Many people preferred to work during the quieter overnight hours, although most oil lamps were incapable of producing a substantial amount of light.

In a modern sense, the idiom is largely symbolic, since few people voluntarily work by the light of an oil lamp today. An employee working on a tight deadline or a project team preparing for an important presentation may "burn the midnight oil" by staying in the office after hours or working throughout the night at home. This may be the only way to meet a specific deadline or devote more time to a project without any distractions.

The expression is generally considered a positive one, implying a person's dedication to getting a project done in a timely fashion regardless of the personal sacrifice. Attorneys working on a difficult court case or physicians working on a complicated diagnosis, for example, would be considered very dedicated if they were burning the midnight oil at work. It is often seen as an honorable sacrifice of personal time for a much greater or larger professional cause.

Parents of newborns may also be said to be burning the midnight oil with late night feedings and changings. Legislators working out the details of a new bill may also do so during special overnight work sessions. Students facing an impending deadline for a research or term paper often find themselves working into the night before the assignment is due. Fortunately for procrastinators and overachievers alike, burning the midnight oil in order to complete a task is almost always a viable option.

Language & Humanities is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Michael Pollick
By Michael Pollick
As a frequent contributor to Language & Humanities, Michael Pollick uses his passion for research and writing to cover a wide range of topics. His curiosity drives him to study subjects in-depth, resulting in informative and engaging articles. Prior to becoming a professional writer, Michael honed his skills as an English tutor, poet, voice-over artist, and DJ.
Discussion Comments
By anon277006 — On Jun 27, 2012

Where does the expression "you are such a ham" come from?

By anon114340 — On Sep 28, 2010

I had a hard drinking and living English teacher in college in 1947. He had a poem, "I'm burning my candle at both ends, it shall not last ere the night, but oh my friends, how bright the light!" He was dead in another year.

By anon114211 — On Sep 27, 2010

I think that if you burn the candle at both ends, eventually you will get burned by the excess of your activities, whether it be exhaustion, stroke or heart attack. Illness is the usual symptom of burning the candle at both ends and holding on to it for far too long. We all tend to do that!

Technology was supposed to "free us" but it has made everyone expect more out of us and our day instead. We are all trapped and thus must burn the midnight oil. stop the planet and let me off please.

By catapult43 — On Sep 27, 2010

I think that burning the candles at both ends has somewhat different meaning.

While burning midnight oil means mostly to work on a project, therefore positive, burning the candles at both ends means living hard, doing too much, which could be work but also fun and entertainment. Maybe partying to much. I think it might have a bit more of a negative meaning.

By anon51892 — On Nov 10, 2009

this is very similar to the phrase, "Burning the candle at both ends".

Michael Pollick
Michael Pollick
As a frequent contributor to Language & Humanities, Michael Pollick uses his passion for research and writing to cover a...
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