The Oregon 4821 form, known as the Proof of Coverage EDI Insurer Profile, plays a crucial role in the administration of workers' compensation insurance in the state of Oregon. This form must be completed by insurers prior to submitting or authorizing a vendor to transmit proof-of-coverage data to the Workers’ Compensation Division via electronic data interchange (EDI). It serves as a necessary step to ensure compliance with state regulations regarding workers' compensation coverage. Each insurer must provide specific details, including the insurer's name and Federal Employer Identification Number (FEIN), particularly if they are directly reporting proof-of-coverage information. Importantly, a separate form is required for each subsidiary insurer within an insurance group that holds a license to write workers' compensation insurance in Oregon. The form also mandates the identification of the authorized vendor responsible for submitting the EDI data, along with their FEIN. Furthermore, it collects contact information for both business and technical representatives involved in the proof-of-coverage process, ensuring clear lines of communication. The form concludes with a section for an authorized signature, indicating the completion date and any necessary updates to previous profiles. Proper submission of the Oregon 4821 form is essential for maintaining accurate records and facilitating the smooth operation of workers' compensation coverage in the state.