Hi,
It seems that there exists a communication gap between you and your employer. Both are unable to reconcile and explain to each other their reservations.
You have mentioned that during your employment, you traveled overseas for business, and the HR department provided only a little help in getting visas for the countries you visited for business purposes. This little help was in the form of providing you with the invitation letter from the company's offices abroad and visa drafts.
I fully agree with your contention that they did not provide you with a covering letter indicating your employment with the company. My dear, don't you think that without the invitation letter and visa drafts, it would not have been possible for you to obtain a visa from the concerned embassy? No doubt, the visa was granted based on your personal presentation, but I am sure that the invitation letter played a significant role in that. Just think about it.
Now, the question is why your employer is asking for a copy of your passport, especially of non-blank pages. There may be the following reasons:
1) The employer's accounting books are under surveillance by statutory authorities, which the management does not want to disclose. The statutory authorities want to establish on the records that the expenses borne by the company are genuine, and someone has actually traveled abroad.
2) The employer is under scrutiny by an intelligence agency for its connection with a foreign company.
3) The employer may have received negative information about your visit abroad from a foreign company in confidence.
4) The employer may want to verify from your passport your entries and exits from foreign countries. Additionally, they may want to ensure that you did not visit any other countries without the knowledge of your employer or deviate from the pre-decided schedule.
There may be other reasons as well.
If none of the above circumstances is applicable, then why are you worried? Come forward and have an open discussion with your employer. If justified, provide the copies.
I am sure your employer wants to confirm something from your passport details. I do not know which country(s) you visited for business purposes, but one thing is certain: it is very challenging to obtain a business visa for certain countries. Your employer helped you establish your credibility with the embassy of the country that granted you the visa to visit.
If you agree with this, be confident and provide the required information. Help your employer. You are at the middle management level and will need to move to a senior level in the future. A negative attitude and unnecessary reservations will not help you grow. Relieve your tension, discuss, and act according to the circumstances.
There is no legal matter involved in this. The employer has the right to seek information if you have entered into an agreement to provide it. Otherwise, the only law that applies in these circumstances is the Principle of Natural Justice.
Think from the employer's perspective. If you were the employer and your employee did not provide you with the desperately needed information, how helpless would you feel? Leave aside the differences and speak to your employer.
Regards,
Anil Anand