TOPIC: Motion "that"

I read a motion and ask why it is usually begin with the word "that"
Motion as amended
"That, as the largest employer in Hong Kong, the Government of the Special Administrative Region should set an example of a good employer to ensure that all employees of the Government and subvented organizations as well as contract staff of outsourced government services are under reasonable labour protection; to this end, this Council urges the Government to:

Regarding your post about motions (in meetings) begin with "that".
I believe the answer is because the formal language for making motions in a meetings is "I move that ...." or "I make a motion that....". So in your motion example, the first part for making a motion was omitted and the part remaining (the most important part because it contains the actual motion) was introduced by "that".