SSOC 2024 unit
Other Services & Public Administration Verified · 21 Mar 202434331
Library officer
Library officer assists librarians by helping readers in the use of library catalogues, databases, and indexes to locate books and other materials. He/she also compiles records, sorts and shelves books or other media, removes or repairs damaged books or other media, registers patrons and checks materials in and out of the circulation process. He/she replaces materials in shelving areas.
Level
unit
Mapped ISCO
1
Source
SingStat
Official data
| Official name | Singapore Standard Industrial Classification (SSOC 2024) |
| Issuing authority | Department of Statistics Singapore (SingStat / DOS) |
| Tax authority | Inland Revenue Authority of Singapore (IRAS) (IRAS) |
| Purpose | Classifies occupations in Singapore for labour statistics, workforce planning, and international reporting. |
| Active version | SSOC 2024 (21 Mar 2024) |
| Hierarchy level | Unit (final leaf, 5-digit) |
| Source | https://www.singstat.gov.sg/standards/standards-and-classifications/ssic |
| Prior versions | SSIC 2020, SSIC 2015 |
Definition
Library officer assists librarians by helping readers in the use of library catalogues, databases, and indexes to locate books and other materials. He/she also compiles records, sorts and shelves books or other media, removes or repairs damaged books or other media, registers patrons and checks materials in and out of the circulation process. He/she replaces materials in shelving areas.
Tasks
No tasks listed.
Examples
Under this unit
• Library technician
Elsewhere
• Librarian, see 26221 • Library assistant, see 44110
When you need this code
Job classification
Employers use SSOC for workforce reporting and MOM surveys.
Labour statistics
SingStat collects occupation data for labour force reports.
Immigration
Work pass applications may reference SSOC for skills evaluation.
International reporting
Maps to ISCO-08 for ILOSTAT and cross-country comparisons.
Hierarchy
Correspondence tables
SSOC 2020
- 34331 — Library officer
ISCO-08
- 3433 — Gallery, museum and library technicians
Compliance risk score
Compliance risk score
Moderate checks
4 of 6 factors low-risk
- ✅ Verified source ≤90d
- ✅ ISIC mapping available
- ✅ SSIC 2020 migration mapped
- ✅ Full hierarchy chain
- ⚠️ GST registration applicable
- ⚠️ Sector-specific rules?
Step-by-step guide
1. Confirm occupation
Library officer assists librarians by helping readers in the use of library catalogues, databases, and indexes to locate books and other materials. He/she also compiles records, sorts and shelves books or other media, removes or repairs damaged books or other media, registers patrons and checks materials in and out of the circulation process. He/she replaces materials in shelving areas.
2. Check classification
Verify this SSOC unit matches the actual job scope and tasks performed by the worker.
3. Report via employer
Employers report SSOC codes in MOM surveys and workforce statistics submissions.
4. Stay updated
SSOC revisions occur periodically. Check SingStat for the current version before classification projects.
Applicable taxes & forms
Personal income tax
Rate: Progressive 0% – 24% progressive
Employers file IR8A for employees. Self-employed file Form B/B1 via myTax Portal annually.
CPF contributions
Employer contributions apply for Singaporean / PR employees. Self-employed contribute to MediSave.
Applicable filings
Form C
myTax Portal · Annual (by 30 Nov for paper, 15 Dec e-file)
Full corporate income tax return for companies. Requires audited/unaudited financial statements.
Form C-S
myTax Portal · Annual (by 15 Dec)
Simplified return for companies with revenue ≤ SGD 5M and deriving income taxed at prevailing corporate rate.
Form C-S (Lite)
myTax Portal · Annual (by 15 Dec)
Simplest return for companies with revenue ≤ SGD 200K.
Form F5
myTax Portal · Quarterly
GST return. GST-registered businesses must file within 1 month of quarter end.
Estimated Chargeable Income (ECI)
myTax Portal · Within 3 months of FYE
Compulsory for all companies. IRAS issues Notice of Assessment based on ECI.
Related professions
Repair workshop owner
Repairs electronics, appliances, and consumer goods.
Typically needs
ACRA registration, URA premises use permit, NEA for e-waste disposal.
Pet groomer
Provides grooming and boarding services.
Typically needs
AVS pet grooming licence for boarding, basic animal first-aid, ACRA sole prop.
Public servant
Works in statutory board or ministry.
Typically needs
PSD employment rules, Official Secrets Act familiarity, PDPA for citizen data.
Charity / IPC founder
Sets up charity with Institution of Public Character status.
Typically needs
MCCY charity registration, Commissioner of Charities compliance, IPC tax-deductible receipt rules.
Trade association executive director
Runs industry association representing member companies.
Typically needs
ROS registration, Code of Governance for Charities and IPCs if applicable.
Related codes
Major group
3 ASSOCIATE PROFESSIONALS AND TECHNICIANSUnit group
3433 Gallery, Museum and Library TechniciansAlphabetical index entries
Frequently asked questions
About this SSOC unit and the Other Services & Public Administration occupational cluster
What happens if I choose the wrong SSIC code?
Using an incorrect SSIC may delay regulatory approvals, cause incorrect tax treatment, or affect eligibility for grants. Codes can be updated via BizFile+.
Where can I confirm the official definition?
The authoritative source is the SingStat SSIC 2025 detailed definitions workbook. This site mirrors that data but always verify against the original spreadsheet.
What ACRA filing obligations apply?
All registered business entities must file an Annual Return via BizFile+ within 7 months of their Financial Year End. Companies must also file annual tax returns with IRAS.
Can I register this code as a secondary SSIC?
ACRA allows up to two SSIC codes per registered entity: one primary and one secondary. Use the code that best describes the core economic activity first.
What is SSIC and why does it matter?
The Singapore Standard Industrial Classification (SSIC) is the national system for categorising business activities. It is mandatory at ACRA registration and is used by IRAS, MOM, and other government agencies for tax, licensing, statistical, and policy purposes.
Do I need to register with this SSIC code?
Every business entity registered with ACRA must select at least one SSIC code that best describes its principal economic activity. You can declare up to two codes — one primary and one secondary — via BizFile+.
Official sources
What to do next
Data source: Department of Statistics Singapore (SingStat / DOS) (https://www.singstat.gov.sg/standards/standards-and-classifications/ssic). Occupation data mirrored from SSOC 2024 workbooks. Not the authoritative source.
Last refresh: 21 Mar 2024. Version: SSOC 2024.