I did some contract work for a third party via a recruitment agency. In the T&Cs of the recruitment agency they say they will only pay the contractor if and when their client pays them. Itís been over 30 days since they have been emailed an invoice by my umbrella company. Am I entitled to charge interest in accordance with the Late Payment Act 1998 or does that clause make them exempt? Is that clause lawful? I don't particularly want to start charging interest but I was hoping mentioning it might make them pay up sooner. My feeling is that since the contract is between me and the recruitment agency payment shouldn't depend on their client. If their client doesn't pay or is late paying they should have to shoulder the cost.