I'm a casual laborer.

我是一个临时工。

He worked AS a cASual laborer and did not earn much.

他当临时工，没有赚多少钱。

Finally, they ran out of their savings as Ding Junhui took part in more and more competitions. His father had to work as a casual laborer.

随着丁俊晖参赛越来越多，他们的积蓄最后都花光了，父亲只好外出打些零工帮补。