N
- National Board of Revenue (Bangladesh)
- National Institute of Social Security (INSS)
- National Insurance Fund (Israel)
- National Labor Relations Commission (NLRC)
- National Minimum Wage Act, 1998 (United Kingdom)
- National Social Security Authority (Italy)
- National Trade Register Office (Romania)
- National Tax Agency (Japan)
- National Tax Service (South Korea)
- National Wages Consultative Council Act, 2011 (Malaysia)
- National Institute for Insurance against Accidents at Work (Italy)
- Notice Period (Brazil)
- National Revenue Administration (Poland)
- National Social Security Institute (Spain)
- National Minimum Wage Act, 2000 (Ireland)
- National Social Security Administration (Argentina)