I have an HSA as well... so don't think I'm oblivious to their draw.
And, glock is right, employees do pay for their health insurance as part of their total compensation. The thing that irks me is when employers change the levels without offsetting the difference with proper compensation.
If the employer gets a deal on its insurance rates, they keep the change. If they take a hit on their insurance rates, they pass along the cost. Good business? Perhaps. Really good business if workers are too stupid to realize when this happens that they are getting screwed? Definitely!
The rates employers incur is directly related to the plans they offer and the number of enrollees in those plans. If they change plans from one year to the next which save them significantly without foisting a greater burden of healthcare to their workers unless they increase other compensation to those workers... that's to be applauded. But, what is more often the case is that they save with little things... like a $5 increase in co-pay. If they do this without compensating the employee who will pay that co-pay they have effectively lowered that employee's compensation. This is sometimes pretty noticeable. Enter HSAs.
HSAs allow employers to directly withdraw pre-tax dollars from a paycheck and deposit them into an account for paying co-pays, medicines, etc. Medical expenses. Oftentimes the service which facilitates this (by companies such as WageWorks, the administrator of my company's HSA) issue a debit card of sorts to withdraw from that. And, as with taxes, money we don't see oftentimes becomes forgotten. It has often been argued that if everyone had to write a check for the taxes they pay once a year, there'd be a hell of a lot more angry people over taxes. I submit that the same is true of these HSAs.
As for information on where co-pays are heading... check out this report from the Kaiser Foundation:
http://www.kff.org/insurance/7527/index.cfm
Here's some numbers to look at:
Since the year 2000, health insurance premiums have grown by 87%, compared with cumulative inflation of 18% and cumulative wage growth of 20%. During this period, the percentage of employers offering health benefits has fallen from 69% to 61%, and the percentage of workers covered by their own employer also has fallen.
Despite these cost pressures, relatively few employers offering health benefits report that they are very likely or somewhat likely to drop coverage (6%) or limit eligibility (6%) in the next year, although larger percentages report that they are
very or somewhat likely to increase what employees pay for coverage (49%), increase plan deductibles (39%), increase copayments or coinsurance for office visits (39%), or increase worker payments for prescription drugs (39%). (emphasis added by me)
http://www.kff.org/insurance/7527/upload/7528.pdf
If these companies increase these costs to workers without, in turn, compensating them in their paycheck (I think it's fairly safe to say that very few will), then the amount of total compensation has dropped... in a very sly way, one which is much harder to notice than "we're going to cut $1000 dollars out of your paycheck this year."