Since this word consists of a kanji with hiragana attached, you can bet that it will use the kun'yomi reading. You didn't learn that reading with this kanji, so here's a mnemonic to help you: This vivid and splendid fresh fish is MINE! You grab the other (あざ) one that's not as vivid and splendid. This one is mine.
The new personnel manager brilliantly solved the problem regarding mandatory overtime without pay.