§457 Contributions. If you wish to enroll in Deferred Compensation you have 30 days from your date of hire to enroll retroactive to your original date.Filled form will be mailed to you. I am pleased to present the 2023 Annual Comprehensive Financial Report (ACFR) for the County of. Allegheny County (the County). Employees may contact the LA Deferred Compensation. Plan staff at 225.926. Global Citizen Scholarship is as broad as possible to match the broad, diverse experiences of international and DACA students.