ACS Career Services - What a Ph.D. Chemist should consider before accepting an industrial position . . . Salaries vary by the type and characteristics of the employer. Salaries are highest in private industry and lowest in colleges or universities. Larger employers generally pay more than smaller ones.
Many benefits are negotiable.
It is the responsibility of the Human Resources group at the firm that made you the offer to help you explore these issues. Postdoctoral positions have much to offer, but it is important to look toward the future after the appointment ends. Career growth potential is more important than salary and the benefits package for long-term economic well being. It is also more difficult to evaluate. Personalities are a factor, but what your supervisor can and will do for you are far more important.