There are no South Dakota-based businesses on's list of the '50 Best Places to Work in 2016', but a pair of the companies selected either have, or are currently, doing business in the Mount Rushmore State.

Fargo-based JLG architects designed the Sanford Pentagon and Sanford Fieldhouse in Sioux Falls, as well as the Swiftel Center in Brookings. The company was founded in 1989, currently employs 90 people, and earned between $20 and $49 million in 2015.

One of the big perks JLG offers is a 12% match on employee's 401(k) contributions.

Austin, Texas-based Keller Williams Real Estate has offices in Sioux Falls and Rapid City. The company was founded in 1983, employs 265 people, and earned between $50 and $99 million in 2015.

At its corporate headquarters, Keller Williams has a full-time wellness coach and closes its doors to customers for its annual Wellness Day. selected companies based on three factors:

1. Wallet and workplace: 30 percent of the score

We assessed how well companies look after their staff's financial security through retirement, insurance, and other financial benefits. We also explored work arrangements that increase employee satisfaction, such as flextime and unlimited vacation time.

2. Employee feedback: 34 percent of the score

The best companies by this measure go to great lengths to capture, understand, and act upon insights from their staff. We scored companies on the design of their systems, the depth of their insights, and the thoroughness of their follow-up.

3. Performance innovation: 36 percent of the score

We looked for companies that take special measures to motivate and recognize employee performance.

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