Is it legal to work in the sister concern of my current employer without a proper appointment letter?

Greetings to the Community Members!

I have been working as HR&Admin Manager for a company since April 2015. In August 2016 they started a new company (sister concern to the first company, since they both have the same parent company- Directors are also the same and both companies operate out of the same premises), and since then I have been working as HR & Admin Manager for both companies, even though no Appointment Letter or any other document has been issued to me saying that I will be handling both responsibilities.

Since then, I have been signing Employee Letters and addressing employees as their HR Manager. Are the documents signed by me valid? What kind of letter should be issued to me to make my position a valid one? I have not received any extra pay for handling the new responsibilities, nor have I been given a hike in the original position.

You valuable advice is requested in this matter.

Thanks and regards

If you are interested to continue then there will not be any problem.

From Legal Standpoint, these 2 Two Establishments are separate, if not located in one and the same premises, with due Licenses or Certificates of Registration with further having/maintaining Two Separate Muster-Rolls and if that is the case in point, your Employer/Occupier/Manager is liable to violating the Law prohibiting/forbidding Two/Double Employments at a time, as it were. Your Name in One Muster-Roll whereas you work at Two separate Workplaces on a Workday.
Laws ask noone if s/he will comply. That is Not the Choice. The only Choice is How?
Team Kritarth HRM IR Advisors
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29.6.17

Respected PRASHANT B INGAWALE, Respected Team KRITARTH,
Thank you for your valuable opinions! So in your opinion, what is the legal validity of the documents I have signed? If an employee goes to court in the future on any issue, will these documents hold good?
Thanks and regards
BVARMA