In your absence, we have learned how valuable you truly are to our organization. You do so much and we would have a difficult time replacing you if you ever decided to leave. We hope you'll be with our company for many years to come.
We send our sympathies at this...
Dear (recipient's name),
In your absence, we have learned how valuable you truly are to our organization. You do so much and we would have a difficult time replacing you if you ever decided to leave. We hope you'll be with our company for many years to come.
We send our sympathies at this time. We hope you'll enjoy this (product). May it be a small reminder that you are missed. We hope you are feeling better and will soon gain your full health.
Sincerely,
(your name)