House Bill No. 605, introduced by Representative Beaullieu, aims to amend the workers' compensation framework in Louisiana by enacting R.S. 23:1105. This new provision addresses the calculation of employers' experience modifiers in cases where an insurer is entitled to reimbursement from a third party for compensation and medical benefits paid due to an accident. Specifically, the bill stipulates that the insurer shall not include the accident in the employer's experience modifier calculation until an agreement is reached or a final judgment is made. Once this occurs, the insurer is permitted to recalculate the experience modifier based on the allocation of fault and the reimbursement obtained, retroactively effective to the date of the accident.

Additionally, the bill mandates that any extra premium resulting from the adjusted experience modifier must be amortized over a two-year period, unless the parties involved agree to a different arrangement. This legislative change is designed to provide clarity and fairness in the handling of experience modifiers in workers' compensation cases, particularly when third-party involvement is present.