Can the employer change their contribution every year at enrollment? Admin May 31, 2016 21:21 Yes, an employer can change the amount annually. Employers should communicate these changes to employees. Related articles If employees don't want to contribute to their HSA through a payroll deduction, how can they contribute? Recently, I’ve had an employee who has changed employment status from full-time to part-time. Would this be a special qualifying event that would allow the employee to make coverage changes? Since employees can claim HSA contributions on their taxes post-tax, what is the benefit of the employer offering payroll deductions? Will the employer have to submit employee contributions after every payroll pay date, or can it be done once a month after all payroll for the month has been processed? Do premiums get prorated for effective dates that occur after the first of the month?