Send a handwritten sympathy card instead of relying on email or other forms of electronic communication. It's much more meaningful if you can convey your condolences in a personalized manner that shows you put some thought and effort into writing your message.

Attend the funeral or visitation service, if it feels appropriate to you -- for example, if you have a close relationship with your coworker or many people from your office plan to go to the funeral.

Approach your coworker during a quiet moment to let her know that you're thinking about her. You might simply say, "I know that this is a difficult time for you. I just wanted to let you know that I am here for you if you need someone to talk to."

Invite your coworker out for lunch, if it seems appropriate. If your coworker is having a difficult time readjusting to the work environment after a period of grief or just seems particularly sad or tearful, inviting him to go out for a cup of coffee or lunch can be a welcome distraction.

Offer to help your colleague with any pressing tasks during the grieving period. For example, if you know that she is having a tough time but needs to get a report finished by a certain deadline, you can offer to pitch in and help. Ask her if she needs any help at home, for example, with child care, grocery shopping or other day-to-day tasks, if it feels appropriate.

Send a funeral arrangement to the funeral home if you are the boss or supervisor of an employee who has suffered a loss. You should also offer your condolences in person, if possible.