IL HB3820

Requires employers to provide severance pay to terminated employees equal to one week of pay for each full year of employment

Mandates an additional 4 weeks of pay if the employer fails to provide the required number of days of advance notification under the Illinois WARN Act

Calculates severance rate as the higher of either the average regular compensation over the preceding 3 years or the employee's final regular rate of pay

Requires employers to pay whichever is greater: the statutory severance amount or any severance provided under a collective bargaining agreement

Prohibits waiver of severance rights without approval from the Director of Labor or a court of competent jurisdiction