(20 ILCS 2610/8.2)
(from Ch. 121, par. 307.8b)
All State Policemen, regardless of rank, shall receive a longevity
increment at the start of their 5th, 10th, 15th, 20th and
25th years of service
with the Illinois State Police amounting to approximately five percent of a
trooper's salary for the year preceding that service anniversary.
(Source: P.A. 83-914.)