Does hreflang work on TLDs?

[GraphicMail]

What is your opinion regarding hreflang? We have a .company.com site and franchised other English sites, like company. co.uk, company.com.au etc  - and we share one database. Our other English sites don't want to have to change on-page content by the rough 30% for Google and wanted to know if including the hreflang would mean they would not have to change any content anymore - only the metatags? I don't think that's possible on TLDs, and we can't have our .com content being duplicated.

[wissamdandan]

it works for TLDs and different country tlds

so in you company.com your header will be :

and you can self reference