|# of Industrial ads in C&EN issue with technical program or final program|
Looking at the charted data, there are a number of points to make:
The shift away from print: In 1990, there was no such thing as the internet. If you wanted to hire chemists, you darn well better advertise in C&EN or one of its few brethren. If you wanted to meet chemists at the Fall ACS conference, you'd probably use the relevant issue of C&EN. In 2010, that's not the case. I suspect many job advertisements have moved away from print. (And I'm guessing that ads on ACS Careers are a lot cheaper than a double-pager in C&EN.)
Merger mania: Reading issues from '96 and '98, it was vaguely amusing (okay, really funny) to read ads from companies that you know had been absorbed by
Golden ages past?: I suspect that the recent past (1997-2003?) was a local maxima of chemical employment, fueled by the 'irrational exuberance' of the late-'90s. Whether or not this chart is yet another sign of the potential and dreaded secular shift is yet to be seen.