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Class 8423 - Public order and safety activities

PSIC Class 8423 covers Public order and safety activities. Current child subclasses include Public Order and Safety Activities. This four-digit layer is useful when comparing neighboring activities before landing on the...

Level Class
Hierarchy depth 4/5
Children 1
Last verified 2026-05-12
About this level

Practical summary

Class 8423 sits in the PSIC 2019 hierarchy under O Public Administration and Defense; Compulsory Social Security > 84 Public Administration and Defense; Compulsory Social Security > 842 Provision of services to the community as a whole. This class usually fans out into more specific subclasses such as Public Order and Safety Activities. It is the level people use when they already know the activity family but still need the exact five-digit match.

Administrative context

Where this code is used

This class is used when a business can already narrow the activity family and only needs to compare the final subclasses such as Public Order and Safety Activities. It is the level most often checked before a five-digit decision is finalized.

Selection note

How to choose it

Use this class to choose between its final subclasses such as Public Order and Safety Activities. If two options look close, compare the exact activity, the outputs and the way the business actually earns revenue.

Official note

Source-backed description

This class includes: Administration and operation of regular and auxiliary police forces supported by public authorities and of port, border, coastguards and other special police forces, including traffic regulation, alien registration, maintenance of arrest records Firefighting and fire prevention: administration and operation of regular and auxiliary fire brigades in fire prevention, firefighting, rescue of persons and animals, assistance in civic disasters, floods, road accidents, etc. Administration and operation of administrative civil and criminal law courts, military tribunals and the judicial system, including legal representation and advice on behalf of the government or when provided by the government in cash or services Rendering of judgements and interpretations of the law Arbitration of civil actions Prison administration and provision of correctional services, including rehabilitation services, regardless of whether their administration and operation is done by government units or by private units on a contract or fee basis Provision of supplies for domestic emergency use in case of peacetime disasters This class excludes: Forestry fire-protection and fire-fighting services, see 0240; Oil and gas field fire fighting, see 0910; Firefighting and fire-prevention services at airports provided by non-specialized units, see 5223; Advice and representation in civil, criminal and other cases, see 6910; Operation of police laboratories, see 7120; Administration and operation of military armed forces, see 8422; Activities of prison schools, see division 85; Activities of prison hospitals, see 8610.

FAQ

What does PSIC Class 8423 cover?

PSIC Class 8423 is the four-digit layer that sits just above the final subclasses and usually defines the activity family for Public order and safety activities.

How do I compare Class 8423 with the sibling classes?

Read the neighboring classes and compare the exact wording of the child subclasses. Nearby options include 8421 Foreign affairs and 8422 Defense activities.

Why does Class 8423 matter for a filing decision?

It is usually the last broad checkpoint before the five-digit subclass choice, so it is the right place to catch near-miss classifications.