In many cases, your potential customers (partners) will ask you whether you have a local office set-up.
They ask this question because they want to measure your commitment to the Dutch or other market. They ask this question before they engage in actual business transactions.
JE offers a set of pay rolling services both from legal and HR stand point, so that you can quickly start your Business.
In this case the Principal Company safes time and money on difficult international labour contracts and from other legal aspects.

In the early stages of a new market, it allows the principal company to get confidence into their new market. But having the benefit of working directly with their own staff.