Northwestern University is an at-will employer meaning that the student employee and their employer may end the employment relationship with or without cause or advance notice. However, student ...

Employer Identification Number (EIN) Definition: A 9-digit number obtained by a business with paid employees from the IRS. If you're a sole proprietorship, your EIN is your social security number.

Professional Employer Organization (PEO) Definition: A company that technically "employs" the workers of several other companies and oversees all HR-related functions By combining the employees of ...