Half-time job vs. part-time job

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WRONG: My cousin has a half-time job in a supermarket.
RIGHT: My cousin has a part-time job in a supermarket.

Ask any Englishman what “half time” is and they will tell you that it’s the break in the middle of a football match. So a “half-time job” would be something like a person who comes on to the pitch and repairs the cut-up grass, or sprays some water. Or a man in a bear costume who entertains the crowd.

If you are not talking about these jobs, but instead, you are talking about a job that you do not do permanently, you need to use the phrase “part-time”.

So if your cousin works a few hours or a couple of days in a supermarket, he has a part-time job.

We also use the phrase jokily for people who we think do not do much work. He leaves work on Friday at 2? What a part timer!