One of your main responsibilities as a tenant is to pay your rent. The Housing Executive and housing associations will try their best to work with tenants who fall into arrears to make sure that they don't lose their homes, but private landlords don't need to do this. You should let your landlord know as soon as possible if you're going to miss a rent payment and try to negotiate with them so that you can pay back what you owe at a rate you can afford.