The Texas Workers Compensation Self-Insurance Group (SIG) Change in Security for Incurred Liabilities Form is a document used by the Texas Workers Compensation Self-Insurance Group (SIG) to ensure that the employer meets the requirements for providing security to cover their incurred liabilities. The form includes information about the employer, their workers compensation policy, and their security. Employers must sign the form to signify their agreement to provide the necessary security for their incurred liabilities. There are two types of Texas Workers Compensation Self-Insurance Group (SIG) Change in Security for Incurred Liabilities Form: one for annual policies and one for policies with specific expiration dates. Both forms require the employer to provide a surety bond, irrevocable letter of credit, or other security acceptable to the Texas Workers Compensation Self-Insurance Group (SIG). The amount of security required is determined by the Texas Workers Compensation Self-Insurance Group (SIG) and is based on the employer’s estimated incurred liabilities. The form must be completed and returned to the Texas Workers Compensation Self-Insurance Group (SIG) prior to the policy’s expiration date.