Is it cheating when freelancers hire another freelancers?

[Btaliat]

There are some situations where freelancers have to hire another freelancers for some reasons. The main reason for this is to make sure that they are working better and towards the efficiency of the business. Most of the times, there may be too many tasks with the freelancers, there may be the need for the hiring of another freelancers. However, it is not necessary for the freelancers to tell the clients the plan or even tell the other freelancers.