What are important documents needed before starting a new job?

Before starting a new job, it's important to have several key documents ready. Typically, you'll need to provide identification, such as a driver's license or passport, to verify your identity and eligibility to work. Additionally, tax forms like the W-4 in the U.S. are necessary for payroll purposes, along with any employment contracts or offer letters. Lastly, depending on the job, you may also need to submit background check authorization forms or professional certifications.