Subchapter I. General. § 1–501. Oath to be taken by officers. § 1–502. Reports by custodians of property. § 1–503. Employment to be authorized and compensation to be paid from specific appropriations; moneys returned to Treasury. § 1–504. Designation by Mayor of Dr. King’s birthday as holiday. § 1–505. Effect of signature by mark upon payment of compensation. § 1–506. Refusal to give testimony relating to office or employment. § 1–507. Wages, salaries, annuities, retirement, disability benefits, and other remuneration based on District employment subject to attachment garnishment, and assignment for child support, maintenance, alimony payments, and other obligations. § 1–508. Technical assistance. [Expired] § 1–509. Allowances for privately owned vehicles for employees. § 1–510. Exemption of District government employees on compressed schedule from federal overtime requirements. § 1–511. Review of personnel practices.