A work song is a special kind of song that people sing while they are doing some kind of work. This song is meant to help make the work easier and more fun.
Imagine that you are carrying a big box of toys up the stairs. This is hard work, and it might make you tired or bored. But if you sing a work song while you do it, it can make the task easier and more enjoyable. The rhythm of the song can give you a steady pace to work to, and the words of the song can remind you why you are doing the work in the first place.
Work songs have been used by many different kinds of people throughout history. Enslaved people in America's past often used work songs to help them get through tough physical labor on plantations. Sailors on ships sang sea shanties to keep them focused while they raised or lowered sails or pulled on ropes. And even today, you might hear people singing while they work in factories or on construction sites.
So, a work song is a special kind of song that helps people get through hard work by providing a beat and lyrics to keep the mind occupied and engaged.