Earnings limits and thresholds for Class 1 contributions Earnings limits and thresholds for Class 1 contributions Changes not yet applied. Later legislation changes this provision in ways not yet written into the text below: Sch. 9 para. 7 repealed by Pensions Act 2007 Sch. 7 Pt. 7 1Paragraph 1 Earnings limits and thresholds for Class 1 contributions