The Old-Age, Survivors, and Disability Insurance (OASDI) is a program of the Social Security Administration funded primarily through payroll taxes. It was signed into law in 1935 by then-President Franklin D. Roosevelt.
The OASDI program aims to supplement a worker's lost wages due to retirement, disability or death of a spouse.
The following table shows Social Security field offices ranked by number of retired workers in Wisconsin.
Field Offices Ranking by Number of Retired Workers in Wisconsin (2018)
| Rank | Field Office | Number of Retired Workers |
|---|---|---|
| 1 | Waukesha | 82,250 |
| 2 | Madison | 68,670 |
| 3 | Eau Claire | 63,165 |
| 4 | Green Bay | 58,575 |
| 5 | Greenfield | 55,755 |
| 6 | Appleton | 50,255 |
| 7 | Janesville | 47,600 |
| 8 | Wausau | 39,885 |
| 9 | West Bend | 38,420 |
| 10 | Wisconsin Rapids | 35,030 |
| 11 | La Crosse | 32,715 |
| 12 | Racine | 31,345 |
| 13 | Milwaukee, North | 30,235 |
| 14 | Superior | 29,065 |
| 15 | Fond du Lac | 28,255 |
| 16 | Oshkosh | 28,210 |
| 17 | Sheboygan | 23,375 |
| 18 | Rhinelander | 22,910 |
| 19 | Portage | 22,655 |
| 20 | Rice Lake | 20,550 |
| 21 | Kenosha | 20,245 |
| 22 | Milwaukee, Downtown | 16,885 |
| 23 | Marinette | 15,640 |
| 24 | Lancaster | 15,205 |
| 25 | Manitowoc | 14,075 |
| 26 | Milwaukee, West | 5,055 |
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