what kind of role is it that you do? There is nothing wrong with saying that you do not give permission for your current employers to be contacted until your prospective employers have made you, or are going to make you, an offer. Also, not everyone gives current employers as a reference, especially if the current job doesn't have anything to do with the new one, i.e. it was taken as a stop gap like yours. You just need to be able to explain your reasons for not giving current employer.