When do deductions update to reflect contribution changes?

In general, when an employer makes changes to their health insurance contributions, the date when employees' deductions will update to reflect the change depends on when the company pays its premiums.

• For premiums paid in advance, new deductions will begin the next pay period in the month of actual coverage. For example, deductions that appear in paychecks paid in March reflect March coverage.
• For premiums paid in arrears (for the previous month's coverage), new deductions will start in the same month the change is made.