The terms "deputy sheriff" and "member of a County Police Department" shall also include an elected sheriff of the county who has elected to become a contributor and who has submitted to the board his written election to be included within the provisions of this Section. With respect to any such sheriff, service as the elected sheriff of the county shall be deemed to be service in the position of deputy sheriff for the purposes of this Section provided that the employee contributions therefor are made at the rate prescribed for members of the County Police Department. A sheriff electing to be included under this Section may also elect to have his service as sheriff of the county before the date of such election included as service as a deputy sheriff for the purposes of this Section, by making an additional contribution for each year of such service, equal to the difference between the amount he would have contributed to the Fund during such year had he been contributing at the rate then in effect for members of the County Police Department and the amount actually contributed, plus interest thereon at the rate of 6% per annum from the end of such year to the date of payment.
A deputy sheriff may in addition, be entitled to the benefits provided by Section 9-133 or 9-133.1 if he so qualifies under such Sections.
A chief of the County Police Department or undersheriff of the County Sheriff's Department electing to be included under this Section may also elect to have his or her service as chief of the County Police Department or undersheriff of the County Sheriff's Department before the date of the election included as service as a deputy sheriff for the purposes of this Section, by making an additional contribution for each year of such service, equal to the difference between the amount that he or she would have contributed to the Fund during that year at the rate then in effect for members of the County Police Department and the amount actually contributed, plus interest thereon at the rate of 6% per year, compounded annually, from the end of that year to the date of payment.
A chief of the County Police Department or undersheriff of the County Sheriff's Department who has elected to be included within the provisions of this Section may transfer to this Fund credits and creditable service accumulated under any pension fund or retirement system established under Article 3, 7, 8, 14, or 15, upon payment to the Fund of (1) the amount by which the employee contributions that would have been required if he or she had participated in this Fund during the period for which credit is being transferred, plus interest, plus an equal amount for employer contributions, exceeds the amounts actually transferred from that other fund or system to this Fund, plus (2) interest thereon at 6% per year, compounded annually, from the date of transfer to the date of payment.
A chief of the County Police Department or undersheriff of the County Sheriff's Department may purchase credits and creditable service for up to 2 years of public employment rendered to an out-of-state public agency. Payment for that service shall be at the applicable rates in effect for employee and employer contributions during the period for which credit is being purchased, plus interest at the rate of 6% per year, compounded annually, from the date of service until the date of payment.
40 ILCS 5/9-128.1