Nominations are now open for the Minnesota 2016 Top Workplaces honor.

The Star Tribune is again teaming with Pennsylvania research firm WorkplaceDynamics. Its survey measures which companies are high achievers in employee satisfaction based exclusively on employee feedback. The company surveyed 1.5 million employees at 7,000 organizations in 2015. Those organizations that meet the national standard qualify for regional Top Workplaces lists across the country.

Last year, Minnesota scored the highest of 45 regions in workplace satisfaction. To qualify, companies had to have at least 50 employees and agree to allow WorkplaceDynamics to send them a confidential survey. There is no charge to companies or employees, and they are not compensated for their participation. Employers are ranked solely on the scores generated by employee responses.

The survey measures organizational health such as company values, execution, leadership and culture; employees’ job satisfaction; and employees’ engagement such as motivation, desire to stay and willingness to recommend their workplace to others.

If you know of a Minnesota company or nonprofit organization with 50 or more employees that deserves to be considered for this year’s Top Workplaces, submit your nomination at startribune.com/nominate or call 612-605-3306. Nominations must be submitted by Feb. 26. Employees at participating companies will be surveyed through March by WorkplaceDynamics. A special section showcasing the Top Workplaces will be published in June.

The top large, midsize and small companies from 2015 are listed on the following pages, together with the companies that met the national standard for a top workplace.