Generally, no. Our Employers invest quite a lot of time and energy into making sure new staff are welcomed, trained, settled in, and supported. In fact, we choose Employers who do this because we want them to take good care of you. To be fair to them, we require you to stay for at least a few months. It does vary from role to role, so we will confirm this timeframe with you during the interview process.
The only exception to this is when we advertise a position with a short-term contract and this will be specified in your employment offer.