Yes, you can cease paying contributions to the pension scheme at any time. This means your employer is no longer obliged to make pension contributions for you either. You’ll automatically be re-enrolled back into the pension scheme at your employer’s next re-enrolment date if you’re still an eligible jobholder (unless you’ve already opted back in). If you stopped active membership in the 12 months leading up the re-enrolment date your employer doesn’t have to re-enrol you on this occasion, but they’ll need to on the following re-enrolment date in 3 years’ time.