Unexpected cut in pay after resigning in MN

[GSBuilder]

While working for a company in MN, I was given a promotion to manager/key holder and the raise that came with it. The day before the new payrate and job description became affective I was offered a position at a competitor with better hours, less responsibility and higher pay and benefits. I put in my 2 weeks notice, worked both weeks under the new job description, fulfilling all new responsibilities before leaving. Two weeks later when the paycheck that should reflect the higher payrate and responsibility shows up, I noticed that it did not reflect any change. I called the company, but have not recieved calls back. Just after putting in my 2 weeks, I asked my supervisor if it affected my promotion, and he said he needed me to work as a manager, and that the pay increase was still affective. I read on this forum that in Texas they are required to tell you that your pay will decrease, is there a similar law in MN?

[Pattymd]

I could not find such a requirement in a cursory search of the MN DOL website, however, knowing MN as I do, I would be surprised if this requirement did not exist there. You can contact the DOL directly and ask them. (651) 284-5005