If you sell, close, or discontinue business operations within Los Angeles, you must notify the City of Los Angeles, Office of Finance. To access the forms below, you will need Adobe Acrobat Reader.Los Angeles City Clerk's Office. Read the Affidavit of Lost Payment Instructions, complete the Affidavit of Lost Payment and submit any supporting documentation. Using our online services, you can file a return, make a payment, submit a claim for refund, file an appeal and much more. Only current period tax forms are available online. For prior period returns and schedules, please contact your local field office. Copy of certificate of workers' compensation insurance made out to the contractor's state license board. Starting a business in Culver City? Looking to get a business license?