I work for a giantic corporation with many subdivisions and wholly owned affiliates. Every time I do mergers and acquisitions work, we have financy (payroll) break down the costs. For our manufacturing arm (or arms, depending on how you look at it), benefits amounted to about 27% per person depending on their salary. Our manufacturing organizations are considered to be typically old-school run mentality. Our IT, outsourcing, and consulting businesses vary wildly on the percentages. IT seems to be higher, last I looked, around 35%. It was suggested that it’s because there are so many contractors and consultants that insurance costs were rising for our real employees since they were all similar – middle aged people, families of 4 or more, all using a lot of insurance. Consulting, on the other hand, was lower, around 20%, it seems (probably lower), and it was assumed that these people were mostly single, young, healthy, and didn’t really have time to use insurance.
The numbers I’m quoting do not include any taxes, but do include pension and 401(k), bonuses, and some funky number the finance people came up with to account for stock options (e.g. amortized over 4 year cascading vesting period, with an intrinsic strike price, etc.) Currently, we’re trying to get one giant umbrella policy so that we can start centralizing our benefits (and legal (almost done!), and hr, finance, and accounting).
For executives, it seems that the number is much higher (40-45%), as I had to review offer letters. However, there was no analysis for these letters, and I’m going by just by what I’m reading, so the number can be total BS, and which I can totally envision HR doing.
If you’re trying to negotiate salary, here’s my 2 cents: just emphasize value. Remind them how good you are at the work, and how little learning curve you have. Is $65 the rate to the consultant’s agency, or to the consultant himself? If it’s to the agency, that number is going to be at least $90/hr, and I wouldn’t be surprised if it was $130/hr. If you want a mathematical way of looking at it, my friend just recently negotiated his new job, and his target range was consultant wage - current wage, then multiply total by 1.15. The range is +/-5% of that number.