Modifies provisions relating to civilian review boards

HB 303 establishes detailed procedures for internal disciplinary investigations involving law enforcement officers facing potential penalties like suspension, demotion, or termination. It requires agencies to provide officers with written notice of complaints 24 hours before interviews, ensure confidentiality for complaint filers, allow attorney presence during questioning, and complete investigations within 90 days (with limited extensions). The bill mandates that officers be informed of their Garrity rights (protection against self-incrimination), granted reasonable rest periods during interviews, and given access to investigation records within five business days of request. It directly affects law enforcement officers in state and local agencies, ensuring procedural fairness during administrative reviews that could result in economic loss (e.g., lost pay or benefits), while clarifying that this focuses on internal agency processes - not civilian review boards as the title suggests.