Where are you planning to get your nannies from? EU or not? Because it's impossible to bring nannies in from outside Europe I believe. This agency site may help you. http://www.perfectway.ch/en/for-families.html
And this for au pairs:
"The Law on Foreign Nationals, in force since 1 January 2008, has introduced the following changes:
Au pairs from third countries (e.g. USA, Canada, Thailand, etc.) can only receive permits if they are placed through an agency which is approved and licensed by the Swiss State Secretariat for Economic Affairs (SECO). Currently there are only few such agencies specialising in the placement of au-pairs (e.g. profilia). However, we expect the number to increase throughout the year. Au pairs may now be placed only if they are between 18 to 25 years old.
Placement through an agency is not necessary if employing au pairs from EU/EFTA countries. The age range for au pairs from EU/EFTA countries remains between 17 and 30 years of age. Au pairs from "old" EU or EFTA member states (e.g. France, Spain, UK, Norway, etc.) receive their short-time residence permit or residence permit after presenting a work contract and registering themselves with the communal authorities. Au pairs from the new EU member states (e.g. Poland, Slovakia) still require a residence permit from the cantonal authorities."
And wages info: http://www.seco.admin.ch/aktuell/002...r&msg-id=35736 I am an EU national and would like to become self-employed in Switzerland. How do I proceed?
Within 14 days of their arrival and before taking up any gainful employment, EU-27/EFTA nationals must register either with the communal authorities of their place of residence or with the cantonal labour or migration authorities and apply for a residence permit for self-employment. Also required are a valid ID or passport and documents proving that the requirements for self-employment are met (business plan, start-up capital, under certain conditions also listing with the register of commerce. etc.). Before the permit has been granted, you are not allowed to take up self-employment.
For further details, go to Cantonal migration authorities
If you can prove that you can successfully maintain self-employment, you will be granted an EU/EFTA residence permit valid for five years. The competent local authorities may check whether you are genuinely self-employed, whether your self-employment is sustainable, and economically viable. If these requirements are no longer met, your permit may be revoked.