Suppose a contract job advertises a salary range between $60,000-$75,000 per year. Note that the job is "at will", meaning that the company can let go an employee for no reason. Suppose the company ups the salary (e.g. to $80,000) if a prospective job employee asks for it.
Is this just a way of the company to attract a candidate knowing that they can let go of the employee at any time? Why would a company up the salary so easily without any opposition?