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WSH circulars

Read all the WSH circulars from MOM. They inform stakeholders in the WSH industry about their duties and responsibilities.

WSH circulars 2021

Circular Date Category
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

Circular Date Category

MOM / OSHD / 2020-10
Recommendation from learning report for fatal accident involving failure of a tower crane

 6 Nov 2020 Lifting Equipment

MOM / OSHD / 2020-09
Resumption of in-person WSH training for worker / operator and supervisor-level courses

 17 Aug 2020 Training
MOM / OSHD / 2020-08a
Extension of validity of certifcate for lifts, hoist and lifting platform		 17 Aug 2020 Lifting Equipment

MOM / OSHD / 2020-07
Suspension of in-person WSH Training involving foreign workers

 24 Jun 2020 Training
MOM / OSHD / 2020-01
Examination and testing requirements for statutory Lifting Equipment		 19 Jun 2020 Lifting Equipment
MOM / OSHD / 2020-06
Resumption of activities at workplace premises during Phase 2 of Safe Reopening - Advisory on the safe use of Lifting Equipement and Pressure Vessel		 19 Jun 2020 Lifting Equipment, Pressure Vessels
MOM / OSHD / 2020-04
In-person WSH training is suspended from 2 June 2020		 1 Jun 2020 Training
MOM / OSHD / 2020-05
Suspension of activities at workplace premises to reduce COVID-19 transmission – Advisory on statutory examination and testing of lifting equipment and pressure vessel (1st revision)		 30 Apr 2020 Lifting Equipment, Pressure Vessels
MOM / OSHD / 2020-03
Suspension of activities at workplace premises to reduce COVID-19 transmission – Advisory on statutory examination and testing of lifting equipment and pressure vessel		 5 Apr 2020 Lifting Equipment, Pressure Vessels
MOM / OSHD / 2020-02
Safe use of lifts undergoing major alteration or replacement works as workplace hoist / lifts		 2 Mar 2020 Lift and hoist

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

Circular Date Category
OSHD / SPECS / ESB / AE / 03-2016
Alignment of Authorised Examiner registration to SPE framework		 29 Dec 2016 Authorised Examiner
OSHD / SPECS / ESB / AE / 01-2016
Factsheet on alignment to Authorised Examiner registration framework to SPE scheme		 28 Nov 2016 Authorised Examiner
OSHD / SPECS / ESB / AE / 02-2016
Updates on requirements related to authorise examiner practices		 18 Nov 2016 Authorised Examiner
Shaping a culture of good RoadSense with heavy vehicle community 26 Jul 2016 Others
OSHD / SPECS / ESB / LE / 01-2016
Testing and examination of “Floor Cranes”		 30 Jun 2016 Lifting Equipment
20160620-73
ATPs and LSPs must seek MOM’s approval before changing management staff		 20 Jun 2016 Others
OSHD / OSHI / CS / 02-2016
Safe storage of combustible materials in construction		 1 Jun 2016 Fire / explosions
OSHD / SPECS / ESB / LE / 01 / 2016
Medical examination requirement for crane operators		 23 Mar 2016 Crane
OSHD / SPECS / ESB / PV / 01 / 2015
Quick-opening closures and pneumatic testing		 25 Jan 2016 Pressure Vessel

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

Circular Date Category
20131121-062
Safe work practices during thermal fogging treatment		 21 Nov 2013 Fire / explosions
OSHD / SPECS / ESB / ACC / 01-2013
Safe working at heights for Approved Crane Contractors (ACC)		 26 Jul 2013 Lifting Equipment
OSHD / SPECS / OH / 07-2013
Prevention of fire during thermal fogging		 15 Jul 2013 Fire / Explosions
OSHD / SPECS / ESB / AE / 01-2013
Prohobition of use of proxies to conduct tests and examinations of equipment required by WSH legislation to be certiified by an Authorised Examiner		 2 Jul 2013 Authorised Examiner
OSHD / SPECS / ESB / LE / 02-2013
Reminder on mandatory training requirement for lorry crane operators		 26 Apr 2013 Lifting Equipment
OSHD / SPECS / ESB / PV / 01-2013
Revocation of the Factories (Persons-In-Charge) Regulations and Factories (Certificate of Competency – Examinations) Regulations		 18 Mar 2013 Pressure Vessel
OSHD / SPECS / ESB / LE / 01-2013
Safe operation of gantry cranes at workplaces		 4 Mar 2013 Lifting Equipment
OSHD / SPECS / MHI / PS / 01-2013
Vacuum / Gully sucker trucks in petroleum service		 21 Jan 2013 Fire / explosions

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 / 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-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