Hi
I am sharing a draft which you can suitably adapt / adopt for your specific requirements. I hope the same is in line with your expectations.
Draft
Dear ____(name of the new employee)
Congratulations on being selected to join (name of the company). On behalf of the management and the team members at (name of the company) we welcome you to join a team of doers and winners.
Enclosed is a welcome kit that contains the following
1. Employee handbook
2. List of key telephone extensions
3. ( Other documents relevant to your company)
Welcome once again, to a culture of challenges and opportunities, a place for recognition and growth and we look forward to your enthusiasm and enterprise in jointly attaining the company objectives.
Best Wishes
____ ( name of the HR Head)