Read the definitions and categories of security work, and find out how to apply for your permit here.

Read about the different categories of registration of construction workers, learn how to apply for registration, and download the application form here.

Browse the registration requirements for electrical workers and download the necessary application forms here.

Read the registration requirements for electrical contractors and download the application forms here.

Find out who may qualify for locating underground electricity cables and how to apply for approval from the Director of Electrical and Mechanical Services.

Read about the classes of registration and qualification requirements for gas installers, and download the application forms here.

Find out what is required and how to register as gas contractors and download the application form here.

Learn more about licensed plumbers, qualification requirements and the application procedures.

Use this online service on MyGovHK to submit Application for Electrical WorkerRegistration to EMSD online.