Does H1B Amendment Required Stamping?

H1B Amendment does not require a visa Re-stamping.

Can we go for H1B stamping while amendment is in progress?

US embassy cannot stamp pending H1B Amendment

Since H1B visa is given specifically for a job profile, amendments also need approval. US embassy does not have the approval for your Amendment and hence cant stamp it. You can get your visa stamped based on approved H1B petition at this time if they are ready to do it.

Is H1B amendment mandatory?

An H1B amendment is required when a material change occurs in the terms and conditions of H1B workers employment. ... The H1B employees place of employment changes to a worksite location outside the metropolitan statistical area (MSA) or area of intended employment.