WSH circulars
Read all the WSH circulars from MOM. They inform stakeholders in the WSH industry about their duties and responsibilities.
WSH circulars 2025
Circular | Date | Category |
MOM / OSHD / 2025-03 Advisory on emergency response for injured workers |
12 Feb 2025 | Workplace Health |
MOM / OSHD / 2025-02 |
10 Jan 2025 | Lifting Equipment |
MOM / OSHD / 2025-01 |
3 Jan 2025 | Training |
WSH circulars 2024Show
WSH circulars 2023Show
Circular | Date | Category |
MOM / OSHD / 2023-06 Safe Installation of Photovoltaic (PV) System |
8 Sep 2023 | Construction activity |
MOM / OSHD / 2023-05 |
26 Jul 2023 | Lifting Equipment, Pressure Vessels |
MOM / OSHD / 2023-04 Joint circular on Adoption of Revised Singapore Standard SS586: Specification for hazard communication for hazardous chemicals and dangerous goods |
6 Apr 2023 | Chemicals |
MOM / OSHD / 2023-03 Auditing Requirements for Safety and Health Management System for Marine Industry |
22 Mar 2023 | SHMS |
MOM / OSHD / 2023-02 WSH Coordinator Refresher Training |
16 Feb 2023 | Training |
MOM / OSHD / 2023-01 (revised) Suspension of red blood cell acetylcholinesterase (RBC AChE) medical examination test requirement for exposure to organophosphate compounds |
3 Jun 2024 | Workplace health |
WSH circulars 2022Show
Circular | Date | Category |
MOM / OSHD / 2022-05 Revised Demerit Points System for the construction industry |
15 Sep 2022 | Demerit Points System |
MOM / OSHD / 2022-04 Training requirements for driving of truck mounted concrete pumps on non public areas |
15 Sep 2022 | Training |
MOM / OSHD / 2022-03 MOM Safety time out requirement |
1 Sep 2022 | Heightened Safety Period |
MOM / OSHD / 2022-02 (revised) Safe use of excavators/forklifts as lifting machines |
28 Sep 2022 | Lifting Equipment |
MOM / OSHD / 2022-01 Auditing Requirements for Safety and Health Management System |
1 Apr 2022 | SHMS |
WSH circulars 2021Show
Circular | Date | Category |
MOM / OSHD / 2021-08
Requirements for Work Injury Compensation Insurance under Work Injury Compensation Act 2019 |
8 Dec 2021 | Others |
MOM / OSHD / 2021-07 Proprietary Table Formwork Safety |
16 Nov 2021 | Construction activity |
MOM / OSHD / 2021-06 Guidelines on the use of chlorine containing chemicals for disinfection of swimming pools |
14 May 2021 | Chemicals |
MOM / OSHD / 2021-04 Safety of workers during repair or maintenance of lifts |
7 Apr 2021 | Lift and hoist |
MOM / OSHD / 2021-03 Uploading of all WSH Training Records to MOM |
12 Apr 2021 | Training |
MOM / OSHD / 2021-02 Resumption of in-person WSH training under Phase 3 |
10 Mar 2021 | Training |
MOM / OSHD / 2021-01 Resumption of in-person WSH training under Phase 3 |
22 Jan 2021 | Training |
WSH circulars 2020Show
WSH circulars 2019Show
Circular | Date | Category |
MOM / OSHD / 2019-03 Do not bypass or override safety devices of mobile cranes |
22 Nov 2019 | Crane |
MOM / OSHD / 2019-02 Construction worksites are no longer required to register with MOM |
19 Sep 2019 | Others |
MOM / OSHD / 2019-01
Update of SAC accreditation status and submission of ConSASS Audit Report |
8 May 2019 | SHMS |
Reminder on duties of employers in metalworking sector | 11 Apr 2019 | Others |
WSH circulars 2018Show
Circular | Date | Category |
001 / 2018
Issuance of Medical Leave Certificate (MC) or Light Duties to workers with work-related injuries |
17 Sep 2018 | RTW |
Safe riding for delivery work | 13 Aug 2018 | Others |
OSHD / SPECS / ESB / LE / 04-2018
Risk control measures for lift maintenance work |
8 Aug 2018 | Lift and hoist |
OSHD / SPECS / ESB / LE / 01-2018
Data logger requirements for mobile cranes |
27 Jul 2018 | Crane |
OSHD / SPECS / ESB / LE / 02-2018
Safe use of material hoist for the carrying of goods without persons from one defined level to another |
5 Jul 2018 | Lifting Equipment |
OSHD / SPECS / ESB / LE / 01-2018
Safety clearance for gantry cranes at workplaces |
24 Apr 2018 | Lifting Equipment |
Safe work at heights at completed buildings | 1 Mar 2018 | Construction activity |
WSH circulars 2017Show
Circular | Date | Category |
OSHD / SPECS / ESB / LE / 03 / 2017
Requirements for non-destructive testing of statutory equipment (Lifting Equipment and Pressure Vessels) under WSH Act |
26 Jul 2017 | Pressure Vessel |
OSHD / SPECS / OH / 01 / 2017
Hazards of Tetramethylammonium Hydroxide (TMAH) |
21 Jul 2017 | Chemicals |
OSHD / SPECS / ESB / LE / 02-2017
Revised statutory examination for lorry cranes |
15 May 2017 | Crane |
OSHD / SPECS / ESB / LE / 01 / 2017
Inspection of data loggers for mobile cranes |
12 Feb 2017 | Crane |
20170125-76
Conduct and submission of ConSASS Audits |
25 Jan 2017 | SHMS |
WSH circulars 2016Show
WSH circulars 2015Show
Circular | Date | Category |
OSHD / OSHI / CS / 01-2015
Collapse of reinforcement cage for the thick concrete slab |
1 Sep 2015 | Construction activity |
OSHD / SPECS / ESB / LE / 02 / 2015
Requirement for data loggers for mobile cranes |
1 Aug 2015 | Crane |
OSHD / SPECS / MHI / PS / 01-2015
Hazards and controls of combustible dusts |
23 Jul 2015 | Fire / explosions |
OSHD / SPECS / ESB / LE / 01 / 2015
Tower crane control circuit systems |
8 Jul 2015 | Lifting Equipment |
20150618-67
Enhanced demerit points system for the construction industry |
18 Jun 2015 | Construction activity |
Safe use of storage racks | 7 May 2015 | Others |
WSH circulars 2014Show
Circular | Date | Category |
OSHD / SPECS / MHI / PS / 01-2014
Joint circular on safe handling and use of hydrocarbon refrigerants |
20 Feb 2014 | Fire / explosions |
Advisory for professional engineers on formwork safety | 18 Jan 2014 | Construction activity |
OSHD / SPECS / MHI / PS / 01-2014
Revised Singapore Standard SS 506: Part 3 |
10 Jan 2014 | SHMS |
WSH circulars 2013Show
WSH circulars 2012Show
Circular | Date | Category |
OSHD / SPECS / OM / SME / 04-2012
Revision of laboratory reference interval for red blood cell acetylcholinesterase levels |
18 Dec 2012 | Workplace health |
OSHD / SPECS / ESB / LE / 01-2012
Safe use of mobile elevating work platform (MEWP) |
1 Oct 2012 | Lifting Equipment |
OSHD / SPECS / OM / HS / 01-2012
Managing heat stress in the workplace |
15 Aug 2012 | Workplace health |
OSHD / SPECS / MHI / PS / 01-2012
De-oiling / Removal of flammable liquids from pipelines |
2 May 2012 | Fire / explosions |
OSD / Kentledge
Load testing on piles |
5 Apr 2012 | Construction activity |
OSHD / Piling Rig Operation / ME044
Safe operation of piling machines |
14 Mar 2012 | Piling machine |
OSHD / OSHI / MI043
Safety considerations in gate design and operation |
1 Mar 2012 | Others |
OSHD / SPECS / ESB / LE / 03-2012
Mandatory training requirement for lorry crane operators |
15 Feb 2012 | Lifting Equipment |
WSH circulars 2011Show
Circular | Date | Category |
OSHD / SPECS / ESB / LE / 02-2011
Use of hydraulic jack-in piling (JIP) machines |
12 Aug 2011 | Piling machine |
OSHD / WSHAOCir / 2011-1
Workplace safety and health (WSH) auditors |
21 Jun 2011 | SHMS |
OSHD / Scaffold
Suspended scaffolding requirements |
31 May 2011 | Lifting Equipment |
20110425-39
Inspection and filling of compressed gas cylinders |
25 Apr 2011 | Pressure Vessel |
WSH circulars 2010Show
Circular | Date | Category |
OSHD / LE-1 / 10
Safe work procedures for operating lorry cranes on public roads |
29 Jul 2010 | Crane |
WSH circulars 2009Show
Circular | Date | Category |
20091120-37
Accidents involving use of gondolas |
20 Nov 2009 | Lifting Equipment |
OSHD / LE-1 / 09
Load charts, operation manuals and safekeeping of maintenance and operational logs |
18 Nov 2009 | Lifting Equipment |
2009-35
Lifts installation works |
1 May 2009 | Lift and hoist |
WSH circulars 2008Show
Circular | Date | Category |
OSHD / LE-1 / 08
Foundation anchors for tower cranes |
26 Mar 2018 | Crane |
WSH circulars 2007Show
Circular | Date | Category |
List of de-registered mobile cranes found to be illegally retrofitted | 29 Mar 2007 | Crane |
OSD / ENG-CIR / LE-3 / 02
Limit on the years of service of mobile cranes: Extension criteria for the service life of mobile cranes |
27 Mar 2007 | Crane |
20070119-29
Updated list of mobile cranes granted extension of service life |
19 Jan 2007 | Crane |
WSH circulars 2006Show
Circular | Date | Category |
Use of socket-outlet assembly in construction and building sites | 28 Apr 2006 | Construction activity |
OSD / ENG-CIR / PV01 / 05
Requirement for testing of safety valves of steam boilers during statutory examinations |
1 Mar 2006 | Pressure Vessel |
WSH circulars 2005Show
Circular | Date | Category |
OSHD / ENG-CIR / LE-2 / 05
Safe use of lifting equipment |
12 Sep 2005 | Lifting Equipment |
20050823-26
Swimming pool owners and operators |
23 Aug 2005 | Chemicals |
DIS / ENG / CIRCULAR-13 / 99
Report of examination of test of pressure vessels |
12 May 2005 | Pressure Vessel |
OSD / ENG-CIR / PV-02 / 05
Registration of steam boilers |
27 Apr 2005 | Pressure Vessel |
DIS / ENG / CIRCULAR-10 / 99
Registration of pressure vessels |
12 Apr 2005 | Pressure Vessel |
OSD / ENG-CIR / LE-1 / 05
Safety devices / features on tower cranes |
2 Feb 2005 | Crane |
WSH circulars 2004Show
Circular | Date | Category |
OSD / ENG-CIR / LE-02 / 04
Lifts and hoists |
16 Oct 2004 | Lift and hoist |
OSD / ENG-CIR / PV-01 / 04
Requirement for piping, hose, tube connections for air receivers |
16 Apr 2004 | Pressure Vessel |
1-04
Type approval of tower cranes |
6 Mar 2004 | Crane |
WSH circulars 2003Show
Circular | Date | Category |
OSD / ENG-CIR / PV-03 / 03
Requirement for safety valves for air receivers |
7 Aug 2003 | Pressure Vessel |
OSD / ENG-CIR / LE-3 / 03
Truck mounted mobile cranes |
18 Jul 2003 | Crane |
OSD / ENG-CIR / PV-02 / 03
Requirement of gas train for steam boilers (or furnace) using natural gas |
25 Jun 2003 | Pressure Vessel |
OSD / ENG-CIR / LE-2 / 03
Registration of excavators |
13 May 2003 | Lifting Equipment |
OSD / ENG-CIR / LE-1 / 03
Load testing of cranes |
1 Apr 2003 | Crane |
WSH circulars 2002Show
Circular | Date | Category |
OSD / ENG-CIR / PV 05 / 02 Factories (Examination and Test of Steam Boilers) (Exemption) Order 2002 |
18 Nov 2002 | Pressure Vessel |
OSD / ENG-CIR / LE-2 / 02
Automatic overload cut-off for mobile and tower cranes |
26 Mar 2002 | Crane |
OSD / ENG-CIR / LE-1 / 02
Classification for storage and retrieval system |
26 Mar 2002 | Lifting Equipment |
OSD / SC001 / 2002
Riggers and signalmen attire in construction and building sites |
1 Jan 2002 | Crane |
WSH circulars 2001Show
Circular | Date | Category |
OSD / ENG-CIR / LE-3 / 01
Inspection requirements for statutory lifting equipment |
9 May 2001 | Lifting Equipment |
OSD / Eng / Circular-2 / 2001
Steam piping and associated fittings for pressure vessels and blowdown tanks for boilers |
30 Mar 2001 | Pressure Vessel |
OSD / Eng / Circular-LE-1 / 01
Limit of service life of piling machines |
31 Jan 2001 | Piling Machine |
WSH circulars 2000Show
Circular | Date | Category |
OSD / Eng / Circular-LE-6 / 00
Interlocking gates on every lift landing for employee's lift in construction site |
13 Nov 2000 | Lift and hoist |
OSD / Eng / Circular-LE-5 / 00
Exemption of lifts from requirements of the Factories Act |
13 Nov 2000 | Lift and hoist |
2000-11
Technical advisory for laundry factories on the spontaneous ignition of laundry |
1 Nov 2000 | Fire / explosions |
OSD / Eng / Circular-LE-4 / 00
Luffing jib tower crane |
3 Aug 2000 | Lifting Equipment |
OSD / ENG-CIR / LE / 4 / 01
Safe use of mobile cranes in construction sites |
1 Aug 2000 | Engineering materials |
Safe use, handling and storage of nitrocellulose | Jul 2000 | Chemicals |
OSD / Eng / Circular-LE-1 / 00
Inspection of tower crane |
29 Jun 2000 | Lifting Equipment |
DIS / ENG-CIR / 3 / 2000
Inspection of pressure vessel |
28 Jun 2000 | Pressure Vessel |
Guide to local fabricators of pressure vessels | Mar 2000 | Engineering materials |
Corrosion in autoclaves | Jan 2000 | Engineering materials |
WSH circulars 1999Show
Circular | Date | Category |
DIS / Eng / Circular-13 / 99
Report of examinations of tests of pressure vessels |
5 Aug 1999 | Pressure Vessel |
DIS / Eng / Circular-12 / 99 Repairs/Modifications of statutory pressure vessels and pressure piping |
5 Aug 1999 | Pressure Vessel |
DIS / Eng / Circular-10 / 99
Registration of pressure vessels |
5 Aug 1999 | Pressure Vessel |
DIS / Eng / Circular-7 / 99
Inspection of refrigeration plant pressure receiver |
13 Apr 1999 | Pressure Vessel |
Last updated: 12 February 2025