Works four hours a day vs Works four hours in a day

Both phrases are correct, but they are used in different contexts. 'Works four hours a day' is commonly used to describe a regular schedule where someone works four hours each day. 'Works four hours in a day' is used to specify the total amount of time worked within a single day.

Last updated: March 29, 2024 • 685 views

Works four hours a day

This phrase is correct and commonly used in English to describe a regular schedule where someone works four hours each day.

This phrase is used to indicate a routine or regular schedule where the person works for four hours every day.

Examples:

He works four hours a day at the office.
She works four hours a day on her online business.
The part-time job requires working four hours a day.
I dedicate four hours a day to studying.
The training program involves working four hours a day.

Show examples from the web [+]

And so in conclusion, I guess the truth is that I can't, you know... work twenty- four hours a day.
The Postcommunist model is characterised by the absence of any model at all, where supermarket staff work until ten in the evening, even on the first of May, or work twenty-four hours a day for 200 euros per month.
You're only supposed to work four hours a week.
You work four hours a week making people dance at a party.
Twenty-four hours a day in the shoes of another... must be unbearable.
Four hours a day for this house is enough.
Indeed, whilst contact with asbestos is confined to eight hours of work for other workers, sailors breathe in contaminated air twenty-four hours a day, since they work, eat and sleep at the 'workplace'.
His nocturnal habits allow our circle to operate twenty-four hours a day.
And then, the rest of their life, they will do three or four hours a day.
Each Member State should set up a central authority which remains operational twenty-four hours a day throughout the year, to receive and pass on communications.
Before I forget, room service is available twenty-four hours a day.
And women shouldn't have to spend four hours a day looking for it, or watching their kids die.
The national coordination centre shall operate twenty-four hours a day and seven days a week.
And then, the rest of their life, they will do three or four hours a day.
And they said that during that time period, the Sun came out for about four hours a day.
I don't. I have four hours a day to go shopping.
Erik worked four hours a day, five days a week per photo.
This reference value applies to planned new buildings in which people will spend more than four hours a day and to playgrounds and school premises.
I got four hours a day to fill, man.
But, Will, I'm on my feet four hours a day, three times a week here.

Alternatives:

works for four hours each day
works four hours daily
works four hours every day
works four hours per day
works a four-hour shift daily

Works four hours in a day

This phrase is correct and is used to specify the total amount of time worked within a single day.

This phrase is used to indicate the total duration of work within a specific day, without implying a regular schedule.

Examples:

He works four hours in a day to complete his tasks.
She can finish the project by working four hours in a day.
The job requires working four hours in a day occasionally.
I managed to get everything done by working four hours in a day.
The overtime was completed by working four hours in a day.

Show examples from the web [+]

And so in conclusion, I guess the truth is that I can't, you know... work twenty- four hours a day.
The Postcommunist model is characterised by the absence of any model at all, where supermarket staff work until ten in the evening, even on the first of May, or work twenty-four hours a day for 200 euros per month.
There are twenty four hours in a day.
You're only supposed to work four hours a week.
You work four hours a week making people dance at a party.
Indeed, whilst contact with asbestos is confined to eight hours of work for other workers, sailors breathe in contaminated air twenty-four hours a day, since they work, eat and sleep at the 'workplace'.
Twenty-four hours in the death zone.
We had Rosenberg, Frick and Ley... for four hours in our house.
Four hours in the pool, one hour of weight training.
Not even the divers who had to spend four hours in that muck.
After nearly four hours in the Colorado wilderness the boys are finally going home.
Twenty-four hours in the city that never sleeps.
Peter, I just spent four hours in surgery.
Anyway, this schedule says I only work four hours next week?
The gas gives three to four hours cooking a day - clean, smokeless and free for the family.
We're up to four hours of electricity a day.
Twenty-four hours a day in the shoes of another... must be unbearable.
Four hours a day for this house is enough.
But it will only allow you four hours in daylight.
at least twenty-four hours in advance; or

Alternatives:

works for a total of four hours in a day
works a four-hour shift in a day
works four hours within a day
works for four hours during the day
works for four hours in one day

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Works four hours a day vs Works four hours in a day