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Singapore Institution of Safety Officers

WSHO License Renewal

Renewal requirements for the certification of WSHO

Any WSHO who wishes to renew his/her certification as a WSHO is required to obtain a minimum of 40 SDUs over the renewal-qualifying period.

Applicants must submit at least a total of 40 Safety Development Units (SDUs), for successful renewal of their registrations.
Applicants are required to submit their applications for renewal at least 2 months prior to the expiry date of their current certificates of registration.

(Please refer to MOM website for the renewal process at:

Note: SDUs obtained under previous SDU framework will still be accepted for your current renewal cycle if the SDUs are obtained within 2 years from registration expiry date.

If your licence has expired,

You can still renew your certificate if it has expired for less than one year.

However, if you wish to renew your certificate after more than one year of expiry, please refer to

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