House and Senate committees are holding public hearings and work sessions on rival plans to expand Medicaid in New Hampshire this week. The House holds its public hearing Tuesday morning while the Senate's hearing on its plan is that afternoon. The committees working on the bills will vote on a recommendation Thursday, but whatever they decide may be superseded by any compromise negotiated behind closed doors by legislative leaders and Gov. Maggie Hassan. The House and Senate plans are essentially the same for the first year, but take different approaches after that. Both start by using private insurance for adults already on employer-sponsored plans and enroll others into the state's managed care program. The House continues that for two more years while the Senate shifts people onto the exchange.