would there be RFE/issue for doing two jobs at same time two individual H1 ?

[r_u_live]

One of my friend is in this situation, around 5-6 yrs back when he was getting close to 6th yr of H1 and thought Comp A is delaying initiating the GC process so joined comp B(H1 xfer) and started working on remote project with comp B, without leaving Comp A. 

in couple months he found Comp A is initiating GC so he left comp B in around 4-5 months and then he was only working for comp A and later got 140 approved.. 

for that year he got two w2's and two I797's, do you think at any stage of GC it might be an issue ?

[jairichi]

Was the remote work performed from US soil? Was a H1B petition filed or approved with new employer?

Working for two employers without approval of H1B is unauthorized employment. Your friend is in trouble. Need to talk to an attorney.