Your HSA funds are yours to keep for as long as you keep your HSA open. You can continue using your funds to pay for eligible medical expenses even after you leave your company. However, contributing to an HSA requires that you're enrolled in an HSA plan. Your HSA will be terminated with Zenefits on the same day as your termination. You will not receive any further contributions beyond this date. So you won't be able to contribute to your HSA until you enroll in another HSA plan. If you are using Wealthcare Saver Bank you can check out this Help Center article for more information.