Hareeb Brother.........., Naam matra Hareeb......vhayana ni..........yeso kay vhaie ra cha......kura bujnue paroye. Looks like u r little confused......It's not E-certified, it's E-verify ho.  It's a programme or say a small application started by USCIS to help company and it's employees.

I don't know how cna you check whether ur company is E-verified or not, But ask this to ur human resources.

Also, it has nothing to do with H1, It is related to OPT extension for STEM programme.

E-verify is one of the requirements a company should have in order to extend one's OPT through that company. for more informations click this link...................

http://www.uscis.gov/portal/site/uscis/menuitem.eb1d4c2a3e5b9ac89243c6a7543f6d1a/?vgnextoid=75bce2e261405110VgnVCM1000004718190aRCRD&vgnextchannel=75bce2e261405110VgnVCM1000004718190aRCRD