How long is too long when it comes to taking carers leave? I have a person who has used all their carers leave up to look after a sick son with cancer - we do not know how long they will be off but it is serious. We are sensitive to the issues but need to run a business. At what point can we look at terminating employment? Is it after 3 months of continuous unpaid carers leave? We desperately need someone to do the work. What are our options?