Dear [Boss/President],
I wanted to take a moment to wish you a very happy birthday! Today, we celebrate not just another year of your life, but all the incredible work you have done for our company/country.
Your leadership and vision have inspired us all to work harder, be more creative, and strive for excellence in everything we do. Your dedication to our team/country is truly remarkable, and we are grateful for all that you do every day.
On this special day, I hope you take some time to celebrate all of your accomplishments and reflect on all the positive changes you have brought to our organization/country. You are a true leader and a role model to us all, and I feel privileged to work under your guidance.
Once again, happy birthday! May your day be filled with joy, happiness, and all the good things you deserve.
Sincerely,
[Your Name]