Professional Investigators

Source file: Cook County, Illinois — Employee Payroll / ingested Jun 19, 2026

The Professional Investigators is a government agency that delivers public services and programs within its jurisdiction.

In 2018, this agency had 3 employees with median total compensation of $11,804; the highest distinct record was $13,847.

Year: 2018
Total payroll: $28.4K
Employees: 3
Median total: $11,804
Highest record: $13,847

What the records show

Compensation analytics

These summaries compare pay within the agency before listing individual records.

Salary distribution

$2,721$13,847+

Hover a bar for its range; click to filter the list below.

How 2018 total compensation is spread across the 3 employees. Each bar is a pay range; taller bars mean more people earn in that range. The amber line marks the median ($11,804) — half earn less, half more. The far-right bar collects the highest earners.

Average pay composition

Base — $9,457 (100%)
Overtime — $0 (0%)
Other — $0 (0%)
Benefits — $0 (0%)

What an average paycheck here is made of — base salary versus overtime, other pay (bonuses, allowances), and benefits. A large overtime or other-pay share means take-home often exceeds base salary.

Pay percentiles

10th

25th

Median

75th

90th

$2,721

$11,804

$13,847

The pay ladder for this department. Someone at the 90th percentile earns $13,847 — more than 90% of the department; the 10th percentile earns $2,721. The shaded band is the middle half of employees (25th–75th percentile).

Largest job titles

Administrative Support VI

2 · $12,826

Correctional Officer

1 · $2,721

The most common job titles in this department by headcount, with the median total compensation for each. Click a title to see everyone who holds it.

Record list

Employees

Page 1

Mary Chessin

Administrative Support VI/Professional Investigators

2018 total comp

$11,804

Base pay: $11,804
Overtime: $0
Other pay: $0
Benefits: $0
Total compensation: $11,804
Hire date: 2012-07-16

Source-specific fields

Employee Identifier: c038dedd-07f1-4bd8-b0d1-7b239d001fcf
Fiscal Period: 2018Q2
Fiscal Quarter: 2
Job Code: 5802
Office: 1216
Position Id: 1803494

Mary Chessin works as a Administrative Support VI for Professional Investigators. They have served since 2012 (about 6 years). Mary earned $11,804 in 2018.