post
https://api.everee.com/integration/v1/deductions/benefits
Start, change or end a worker's deduction for a benefit plan, like medical, dental or an HSA. Benefit deductions are fixed dollar amounts, with an optional employer contribution.
Send an effectiveDate to start or change the deduction, or only an effectiveEndDate to end it. The deduction is identified by workerId and payCode. See the Guide to the Deductions API for how changes are applied.