My question involves employment and labor law for the state of: Arizona
I have worked for this company since May of 2013. There was no limit on hours I was allowed to work other than not exceeding 40 per week. Come about one month ago I was told that myself (and other coworkers) would have to reduce our hours because of the Affordable Healthcare Act. I was averaging around 32 per week and had to stay below 25 hours per week now. This week I was now told I can only work 18 hours a week because "you need to get your average down for the whole year to below 25 hours". The have explicitly told me they need to get my average down because otherwise they will have to pay the fees for the ACA. Are they legally allowed to make me currently work less hours because of hours previously worked to bring this average down? (They also explicitly stated that this was at all no reflection of my work performance.)

