(a) Contributions for service.--The Commonwealth or other employer of an active participant shall make employer defined contributions for service of an active participant that shall be credited to the active participant's individual investment account. Employer defined contributions shall be recorded and accounted for separately from participant contributions.

(b) Contributions resulting from participants reemployed from USERRA leave.--When a State employee reemployed from USERRA leave makes the mandatory pickup participant contributions permitted to be made for the USERRA leave, the Commonwealth or other employer by whom the State employee is employed at the time the participant contributions are made shall make whatever employer defined contributions would have been made under this section had the employee making the participant contributions continued to be employed in the participant's State office or position instead of performing USERRA leave. The employer defined contributions shall be placed in the participant's individual investment account as otherwise provided by this part.

(c) Limitations on contributions.--No contributions may be allowed that would cause a violation of the limitations related to contributions applicable to governmental plans contained in IRC § 415 or in other provisions of law. In the event that any disallowed contributions are made, any employer defined contributions in excess of the limitations and investment earnings on the contributions, but minus investment fees and administrative charges applied against those contributions, shall be refunded to the employer by the board.