Workplace Infidelity Investigations in South Dakota

01Local workplaces

Shift Work, Card Centers and Capitol Offices: Where Office Affairs Start

South Dakota's largest workplaces run on schedules that make an affair easy to explain. In Sioux Falls, Sanford Health and Good Samaritan together employ roughly 11,000 people and Avera Health close to 10,000, with nursing and support staff rotating through nights, weekends and on-call blocks. Citi, Wells Fargo and First PREMIER each employ more than a thousand people in card and banking operations. In each setting, a spouse can say a shift ran long and be hard to contradict. Our Sioux Falls private investigators know how those campuses and parking structures work.

Pierre presents a different version of the same problem. As the state capital, it concentrates state agency staff who travel for hearings, legislative sessions and regional meetings, and a small city means coworkers often socialize together. In Rapid City, Monument Health and the area around Ellsworth Air Force Base create their own rotating schedules. Workplace infidelity investigations in all three places begin by mapping the real schedule against the story you have been told. Our Pierre investigators and the Rapid City surveillance team handle those cities.

02Evidence

What We Document When the Other Person Is a Coworker

We start at the edges of the workday. An investigator confirms when your spouse actually arrives and leaves, whether they leave alone and where they go next. Lunches off campus, shared rides, stops at a coworker's apartment and evenings at a hotel bar near a convention venue are common findings. We photograph only what anyone could see from a public street or parking lot. When the meeting moves to lodging, our hotel surveillance investigators take over the documentation inside the same legal limits.

Identifying the coworker is usually straightforward once a vehicle and residence are known. We confirm the name through lawful records research, and a $102 basic or $300 deep-dive background check through our companion background research service shows whether that person is married, has relevant court history or holds a supervisory role. We never contact the coworker or their family. If business travel is involved, our out-of-state infidelity team coordinates coverage at the conference city.

• Actual arrival and departure times at work
• Who your spouse leaves with and where they go
• Off-site lunches, rides and evening meetings
• Hotel or residence visits after work events
• Lawful identification of the coworker

03State law

Alienation of Affections Is Still a Claim in South Dakota

South Dakota is one of a small number of states that still allow a spouse to sue a third party for alienation of affections. In Cedar v. Johnson, decided in 2018, the South Dakota Supreme Court declined to abandon the claim as outdated and said that any change belongs to the Legislature, then sent the case back for a determination of damages. That makes the identity and conduct of the coworker more than a personal question. Whether a claim is worth pursuing is a decision for counsel, and our attorney services desk works directly with lawyers who handle them.

The divorce itself can also turn on the evidence. SDCL 25-4-2 still lists adultery among the grounds for divorce, and dated surveillance can support that ground when an attorney chooses to plead it. Spending on an affair, such as hotel nights charged to a joint card, may also be relevant when property is divided equitably under SDCL 25-4-44. Our married infidelity investigators handle the household side of the case, and the divorce asset guide explains how spending trails are reconstructed.

04For employers

When the Employer Needs to Know: Supervisor Relationships and Liability

Some workplace relationship cases come from the company, not a spouse. A supervisor involved with a direct report can create favoritism complaints, retaliation claims or allegations of sexual harassment, which South Dakota treats as sex discrimination under the Human Relations Act, SDCL 20-13-10, alongside Title VII. The Division of Human Rights reports that about 90 percent of its charges are employment related, and a charge generally must be filed within 180 days under SDCL 20-13-31. Our workplace harassment investigators handle the formal inquiry.

Employers in South Dakota generally employ people at will under SDCL 60-4-4, but statutes and contract terms can limit that, so any discipline should follow counsel's advice. What we provide is fact-finding: whether a manager is using company time, vehicles or expense accounts for a relationship, documented from public places and records. Expense and travel questions overlap with our employee surveillance service, and broader policy concerns can be routed through our compliance audit team.

05Discretion

Protecting Your Spouse's Job and Your Own Case

Clients often worry that an investigation will cost their spouse a job, and with it the household income or child support. We share that concern. We do not contact employers, call human resources, pose as vendors or ask coworkers questions, and our investigators keep their distance from workplace entrances where security staff may notice them. In a small workplace, even a single question can travel fast, so the plan stays outside the building entirely. Our guide to lawful investigator conduct explains these limits.

You can help by not confronting the coworker, not messaging them and not looking through your spouse's work phone or email. Accessing an employer-issued device or account can create legal exposure for you, and recording calls you are not part of can violate SDCL 23A-35A-20. Our recording law guide explains the one-party consent rule. If you are concerned about what the coworker might find out about you, our information exposure wipe reduces what is publicly searchable.

06Smaller cities

Workplace Affairs in Small South Dakota Cities

Outside Sioux Falls and Rapid City, the employer may be a school district, a hospital, a co-op, an ethanol plant or a county office, and everyone in town may know your spouse's vehicle. Coverage has to be lighter and more patient. We often watch from farther away, use more than one vehicle on a short assignment and focus on the destination rather than following from the workplace. Our Mitchell private investigators and Huron investigators work these towns along I-90 and US 14.

University towns add another layer. Faculty and staff at South Dakota State in Brookings, the University of South Dakota in Vermillion and Northern State in Aberdeen work semester calendars with conferences, field trips and athletic travel. A colleague relationship may play out on the road more than on campus. We plan around those calendars and keep coverage off campus property, and our Aberdeen investigative team covers Northern State and the Brown County area.

07Price

What Workplace Infidelity Investigations Cost

We bill surveillance at $100 per hour, with travel and mileage disclosed before the first shift. Because office affairs cluster around shift changes, lunches and specific evenings, targeted coverage of two to four windows often answers the question. We recommend the minimum hours needed and put the scope and total in writing. The South Dakota pricing page lists every rate, and the investigator cost guide explains how estimates are built.

Identifying the coworker adds a $102 basic or $300 deep-dive check. If your attorney decides to file for divorce or pursue a claim against a third party, we can be retained for civil litigation support at a $1,000 minimum, and Delator Field Services coordinates service of the summons with a signed affidavit through our South Dakota process serving team. Nothing is billed beyond the written scope without your approval.

Services

Workplace Infidelity Services We Provide in South Dakota

• Shift and overtime verificationCoverage at the start or end of a claimed shift to confirm when your spouse really leaves work, who with and where they go next.Learn more
• Work trip surveillanceCoordinated coverage of conferences, training and client travel to document who your spouse spends time and nights with away from home.Learn more
• After-event hotel coverageArrival and departure documentation at hotels after holiday parties, client dinners and conventions, gathered only from lobbies and parking lots.Learn more
• Coworker identificationLawful records research that confirms who the coworker is, including marital status and court history wherever those records are public.Learn more
• Third-party claim supportEvidence organization for attorneys weighing an alienation of affections claim: timelines, photographs, records and preparation of investigator testimony for court.Learn more
• Supervisor relationship inquiriesEmployer-retained fact-finding when a manager's relationship with a subordinate may create harassment, favoritism or retaliation exposure for the whole company.Learn more
• Expense and vehicle misuseDocumentation of company cars, fuel cards or expense accounts used for personal meetings, reported to the employer that retained us.Learn more
• Divorce asset tracingRecords work that follows joint money spent on the affair or moved before property is divided by a South Dakota circuit court.Learn more
• Unmarried partner casesThe same discreet coworker inquiry for partners who live together, co-parent a child or are engaged but have not yet married.Learn more

How it works

How a Workplace Infidelity Investigation Works

1. 01

   Schedule review

   You tell us your spouse's employer, stated hours, recent trips and the coworker you suspect. We compare the claimed schedule with what can be verified lawfully.

2. 02

   Targeted plan

   We pick the shift changes, lunches or evenings most likely to show the relationship and confirm the hours, travel and price in writing before starting.

3. 03

   Off-site coverage

   Investigators observe from public places away from the workplace entrance, log each observation with times and photographs and never at any point contact the employer or coworkers.

4. 04

   Written findings

   You receive a dated report identifying who your spouse met and where, with photographs and any gaps noted, ready for you and your attorney to review together.

Compare

Typical Workplace Infidelity Assignments in South Dakota

Statewide coverage

Workplace Infidelity Investigations Statewide

We take coworker cases in every county. Office parks and warehouses south of Sioux Falls fall to our Harrisburg investigators, while Dell Rapids and the northern Minnehaha County area go to our Dell Rapids investigative team. In the northeast, the Watertown private investigators cover Codington County employers, and Black Hills workplaces are handled by our Sturgis investigators and Spearfish team. Each case uses the same off-site methods and written reporting, wherever the workplace is. Rural drives are planned as separate field days, and travel is disclosed before the first shift.

• Sioux Falls
• Rapid City
• Pierre
• Mitchell
• Huron
• Aberdeen
• All of South Dakota

FAQ

Frequently asked questions

Every service

Investigations available in South Dakota

Every service below is available in South Dakota and across South Dakota, run by the same Delator Group leadership that manages our Tennessee casework. Choose a service to read how it works in South Dakota.

Service areas

Private investigators across South Dakota