Are you sure WHS Officer got 7k? Unless it’s department head in a big company, otherwise I never see b4 normal WHS Officer can hit 7k… Some who have specialist certification in niche areas like chemical storage, offshore exploration etc maybe, but just normal environment not possible lar.

For someone quite new to construction industry safety & environment related positions should be about 3.5 to 3.8k bah. Some of the older more experience ones can reach 4k+.