State-Specific Rules of Professional Conduct: State-specific regulations governing attorney conduct, including requirements for written fee agreements, limitations on contingency fees, and disclosure requirements
ABA Model Rules: American Bar Association Model Rules, particularly Rule 1.5, covering reasonable fees, fee agreements, clear communication requirements, and prohibitions against excessive fees
State Bar Association Guidelines: Guidelines from state bar associations detailing specific requirements for fee agreements, required language/disclaimers, and format requirements
Federal Laws: Relevant federal legislation including the Truth in Lending Act (for payment plans) and Fair Debt Collection Practices Act (for client collections)
State Consumer Protection Laws: State-specific consumer protection regulations covering clear disclosure requirements, cooling-off periods, and cancellation rights
State-Specific Fee Limitations: State regulations on fee structures including caps on contingency fee percentages, restrictions on certain types of cases, and sliding scale requirements
Ethics Opinions: Relevant opinions from state and local bar associations regarding fee arrangements and guidance on proper fee structures
Case Law: Relevant court decisions and precedents regarding fee agreements, enforcement of contingency agreements, and requirements for validity
