Do I have to mention all my work experience on my resume for filing green card?

[newbie_tester]

Hello,

 

My company is going to initiate my GC process. I am assuming the first step would be providing an up to date resume and the next step would be experience letters.

 

Let me give some background about my resume with my number of years for each job.

 

Education: Masters in Computer Science

 

Job1: Graduate Assistant - Web Developer ( Part Time ) - 1 yr, 6 months 

Job2: Software Engineer ( Full Time on CPT, still at school ) - 8 months

Job3: Software Developer( Full time on OPT a month after graduation) - 2 months

Job4: Software Anaylst( Full Time on OPT) - 9 months

Job5: Software Engineer( Full time on H1B) - 1 yr, 9 months

Job6-Current JOB: Software Developer (Full Time on H1B) - 4 months

 

My problem is Job2(CPT) and Job3(OPT) were in small time startups and one of them is out of business and the other one is acquired. So I won't be to provide experience letters for them.

 

I should able to provide experience letters from all other companies(including my university)

 

So my question is do I need to provide those experiences(Job2 and Job3) in my resume while applying for green card?

Can I leave them out of my resume or is it compulsory to specify all experiences.

 

NOTE: Job2 and Job3 were specified in my resume when they filed my H1B.

 

I would appreciate some advice.

 

Thanks in advance!