Get a Gist brand Golf Shirt.
Golf shirts are always a good gift.
If you are not a golfer, avoid at all cost any kind of silly or goofy golf-theme gifts. These are useless and a waste of money. Unless you know the golfer and his unique needs, for example, what kind of golf ball does he play with, it's usually best to treat the golfer to a gift certificate from a good pro shop. You can't go wrong.
Empire Promos and Gift Tree are two companies that make corporate golf gift bags. Other companies will handle such projects, and it's important to find the one that offers the best quality.
Giving a great golfing hat all depends on what there personal tastes are. I happen to like Nike so I would choose a Nike swoosh hat but here is my suggestion to you. Find out what type of golf ball they use for example Titleist then you would get them a Titleist hat.
You can find personalized golf gift mugs at www.personalizationmall.com
The 20Xi logo on the Tiger Woods hat is for golf balls. It is the logo for Nike 20XI Golf Balls.
You might get him something related to his special interests, a hat, gloves, sweater, etc.
Yes, a golf gift set is an appropriate gift for a retiring co-worker since most retirees have a tendency to take up golf once they aren't working anymore.
Hat
The Callaway Collection Womens Golf Bag makes a great gift idea.
Only through Golfsmith.