I am a Frontier worker living in Northern Ireland (NI) and commuting to work in the Republic of Ireland. My employer has just informed me that I have not been paying enough tax and as a result I will not be receiving my wage for the next 2 weeks - in order to amend the discretion. Can they just do this? Are they allowed to just take my entire wage packet over the two week period? Is it not my employers fault that I have not been paying the correct tax amount?