The boss of a company can give this condolence letter to a grieving employee to offer the staff's help.
Dear {Recipient},
I am so sorry that you lost your {relation}. My sincerest sympathies go out to you and your family during this difficult time.
Please don't hesitate to let me know if there is anything I or the rest of the staff can do to shift some of the work burdens away from you. It is the least that we can do.
Sincerely,
{Sender}