Eligibility for H1b extension based on i140

[rishikeshhere]

I worked with my employer on H1b from 2011 to 2015 and then switched to H4

In 2016 the same employer filed my i140 and got it approved 

I have not been working since 2015 due to personal reasons and now the same employer is willing to file change of status for me from H4 to H1

Since i didn't work for the employer after the i140 got approved... can they file my h1b  based on the approved i140?

[pontevecchio]

Yes. In any case you have the remainder of your 6 years in H1 status available as H4 periods are delinked.