Before deciding whether to negotiate salary and benefits, first ask yourself whether you want this job.  Key questions are:

• Do you have comprehensive knowledge of the job’s duties, challenges, work environment and how you will be evaluated? 
• Is this role a good match for your knowledge, skills, and abilities?
• Are your future supervisor’s management style and the organizational mission and culture a good fit?
• Is there upward mobility?  What is the career path for this job?
• Will you have the necessary resources (e.g., budget and staff) to succeed in the job?
• What is the financial outlook for the organization?  Will you have reasonable job security?
• What will your commute require?  What are the work schedule/location options?   

If you need more information, schedule an additional discussion with the hiring manager, recruiter or HR contact.  If you obtain the necessary information and would still like some time to carefully consider the offer, requesting a few days or a weekend is usually acceptable.