Also: noun + の + 余り.

According to my 完全マスター book, other forms are:

動詞た形：~た　+　あまり

and

な形容詞：な　+　あまり

According to Unicom it's only:
Plain form verb + あまり
Noun + の + あまり

The thing about the adjectives is that you need to change them into nouns in order to use them with あまり. There's already a grammar point for that here: *** http://www.renshuu.org/index.php?page=grammar/individual&id=128

So if you want to use the i- and na-adjective in the construction, you need to change
な-adjective A + あまり to
な-adjective: noun form A + の + あまり

***: +さ is only being added to the i-adjectives to point out that it became a quantifying noun. I don't think さ is used with na-adjectives.

fareastfurfaro is actually right. たあまり is possible.

この会社では、働きすぎたあまり病気で倒れる社員が増えている。 (Unicom)