When two companies merge, HR teams are often tasked with aligning dozens of overlapping policies in a tight timeline, and misaligned health benefits communication is one of the most common causes of employee frustration, unexpected out-of-pocket costs, and compliance risk. This resource provides a structured checklist for benefits and HR teams to gather accurate information, align messaging across both merging entities, and avoid costly communication missteps during the transition.
What to ask a broker or carrier
Before drafting any employee-facing communication or answering staff questions about benefits changes, schedule a joint meeting with your licensed benefits broker and representatives from all insurance carriers involved in plans offered by either merging entity. Start by syncing with the benefits teams from both companies first to compile all known employee questions, plan differences, and policy gaps from each workforce, so you can address all outstanding points in a single conversation. This step should take place at least 90 days before the planned benefits transition effective date, if possible, to leave time to resolve conflicting information, update plan documents, and roll out employee outreach well before open enrollment begins. You should prioritize getting written confirmation for all critical policy details, rather than relying on verbal updates, to reduce the risk of sharing incorrect information later.
Question list
This checklist covers all core details you will need to confirm before communicating benefits changes to employees. Check off each item once you have a written, confirmed answer from your broker or carrier:
Eligibility Rules
[ ] Confirm which employee groups (full-time, part-time, temporary, remote, union-represented) from both entities are eligible for the unified benefits plan, if applicable
[ ] Confirm if there are any new waiting periods for enrollees from the acquired company, or if prior service credit counts toward eligibility for waived waiting periods
[ ] Confirm if dependent eligibility rules change for either group of employees, including eligibility for domestic partners, adult children, or disabled dependents over age 26
[ ] Confirm if COBRA coverage rules will change for employees or dependents who are currently on COBRA from either entity
Coverage Timelines
[ ] Confirm the official date the new unified benefits go into effect, and the last date of coverage for any plans being phased out
[ ] Confirm if there is a gap in coverage between the end of old plans and start of new plans, and if so, what bridge coverage is offered for medical, dental, and vision services
[ ] Confirm the open enrollment window length for all employees, including late enrollment exception rules for employees who miss the window due to merger-related disruption
[ ] Confirm the deadline for employees to submit qualifying life event changes that overlap with the transition period
Cost and Covered Services
[ ] Confirm if premium shares for employees will change, and if so, what the new per-pay-period contribution rates are for all plan tiers (employee only, employee + spouse, employee + children, family)
[ ] Confirm if deductibles, copays, coinsurance, and out-of-pocket maximums will change for any group, and if prior deductible contributions from the old plan will roll over to the new plan
[ ] Confirm if in-network provider lists will change, and if employees will be allowed to continue seeing out-of-network providers at in-network rates for a transition period for ongoing care (like chemotherapy, pregnancy care, or physical therapy)
[ ] Confirm if prescription drug formularies will change, and if prior authorizations for existing medications will transfer automatically, or if employees need to resubmit requests
[ ] Confirm if FSA or HSA contribution limits, rollover rules, or account administrator contacts will change for either group of employees
Administrative Next Steps
[ ] Confirm what documentation employees need to submit to enroll in the new plan, if any, and if existing enrollment information will transfer automatically for employees staying on a similar plan
[ ] Confirm how employees will receive new ID cards, and if digital ID cards are available for use before physical cards arrive
[ ] Confirm what the process is for filing claims for services received during the transition period between plans
[ ] Confirm if employees will need to update their beneficiary designations for life insurance or disability benefits under the new plan
How to record answers
Collecting confirmed answers is only the first step; you need to store and share those answers consistently across all HR staff from both merging entities to avoid conflicting employee updates. Create a single, cloud-based source of truth that is only editable by the core benefits negotiation team, but viewable by all HR, people operations, and frontline people managers across both companies. For every confirmed answer on the checklist above, note the date you received the answer, the name and title of the broker or carrier representative who provided it, and links to any supporting documentation (like a Summary of Benefits and Coverage, official carrier FAQ, or signed rate agreement) that backs up the answer.
If you get conflicting answers from different carriers or brokers, pause all employee communication related to that topic until you resolve the discrepancy and have a unified written confirmation from all involved parties. Illustrative example: If the acquiring company’s carrier says unused health FSA funds will roll over to the new plan, but the acquired company’s plan administrator says rollovers are not allowed, hold off on sharing any FSA details until both parties sign off on a single, consistent policy.
Track all employee questions that come in before and during open enrollment, and update the shared source of truth with confirmed answers as soon as you receive them. You can also pull the most common questions and answers into a standardized script for HR staff and managers to use during one-on-one conversations with team members, to ensure every employee gets the same accurate information no matter who they ask. Log all employee communication sent about benefits changes, including the date sent, audience, and full content, so you can reference it later if an employee reports receiving conflicting information.
What not to promise employees
Even with the best intentions, making unconfirmed promises to employees during a merger can lead to broken trust, unexpected costs for staff, and compliance risk. Avoid making any of the following promises until you have written confirmation from your broker or carrier:
- Do not promise that coverage will stay exactly the same as it was before the merger. Even if leadership intends to keep benefits identical, administrative or carrier requirements may lead to small changes to cost sharing or covered services that you will be held accountable for if you overpromise.
- Do not promise that all current health care providers will be in-network under the new plan. Provider networks are updated regularly, and some providers may not contract with the new plan. Instead, direct employees to the official, up-to-date carrier directory once it is published for the new plan.
- Do not promise that all current prescription medications will be covered at the same cost. Formularies can change during a transition, and some medications may move to a higher cost tier or require new prior authorization under the new plan. Advise employees to review the new formulary and reach out to their provider if they need to request a coverage exception.
- Do not promise no increases to premium costs until you have final signed rate agreements from the carrier. Preliminary rate quotes can shift based on final employee count, plan design changes, or carrier updates, so avoid sharing estimated costs until they are finalized in writing.
- Do not promise specific tax advantages for benefits plans, because individual tax situations vary widely. Direct employees to a licensed tax professional for questions about how their benefits impact their tax filings.
- Do not promise automatic rollover of all unused FSA or HSA funds until you confirm the exact rollover rules and limits with the plan administrator.
Bottom line
This is not insurance, tax, legal, or medical advice. All benefits details should be verified against official plan documents and a licensed benefits broker or carrier representative before being shared with employees.
Mergers are a high-stress time for both HR teams and employees, and clear, consistent benefits communication can reduce widespread anxiety and prevent costly mistakes for both parties. Using the checklist above to gather, document, and share accurate information will help you align your cross-company HR team, avoid common communication missteps, and make the benefits transition as smooth as possible for all staff. Consider holding multiple live Q&A sessions for employees across both merging entities, including sessions outside of standard work hours for shift workers and remote staff in different time zones, to give all team members a chance to ask questions and get clear, consistent answers. Send regular email updates as new information becomes available, and post all benefits transition resources in a single, easily accessible location on both companies’ internal HR portals to reduce the time employees spend searching for information.
Important note: This page is educational and is not insurance, tax, legal, or medical advice. Confirm current rules in your plan documents or with a licensed professional.