They are requirements of the Labor Condition Application (LCA), and the LCA is a requirement for the H1-b, so it is correct to talk about them as requirements of the H1-b. It's not a green card thing. http://www.visapro.com/resources/article/h1b-labor-condition...
LCA is a requirement for H-1B, and thus you are right that it is correct to talk about requirements for LCA as requirements of the H1-B. But, you are wrong that those listed by the GP are indeed requirements for LCA. From the link you posted:
The Labor Condition Application (LCA) contains basic wage
and location information about the proposed H1B employment.
The LCA contains the rate of pay, period of employment, and
work location.
It also contains four standard attestations that the employer
must make.
Those four are listed in the link I posted earlier [1]. 2 out of the 3 the GP listed do not form part of the attestations.
Again, are you confusing LCA [2] with labor certification [3]?
Again, are you confusing LCA [2] with labor certification [3]?
[1] https://en.wikipedia.org/wiki/H-1B_visa#Employer_attestation...
[2] https://en.wikipedia.org/wiki/Labor_Condition_Application
[3] https://en.wikipedia.org/wiki/Labor_certification