PETERSON, Judge.
Appellant father challenges a child-support magistrate's order that modifies father's basic child-support obligation during a period of father's unemployment and education, imputes income to father for purposes of setting his basic child-support obligation thereafter, and rejects father's claim for reduction of his child-support arrears. We affirm.
Appellant Gbenga Akinnola's marriage to respondent Mamie Jegbadai was dissolved in September 2011. The parties have one child, C.A., who was born in 2009.
A child-support magistrate (CSM) set appellant's basic child-support obligation at $761 per month when the issue was first raised in Minnesota in May 2013.
Thereafter, appellant repeatedly attempted to reduce his basic child-support obligation and his child-support arrears,
Id.
While the consolidated appeals were pending in this court, appellant served on respondent on August 13, 2014, a motion to reduce his basic child-support obligation from $761 to $500 per month on the grounds that he was unemployed and attending law school. He also moved to "forgive or reduce" his child-support arrears. He repeated these claims in later, similar motions, all of which were heard at a single hearing on January 8, 2015.
By order dated February 18, 2015, the CSM found that appellant was involuntarily dismissed from his job as an engineer in March 2014 and received unemployment benefits that ended in September 2014, and that he expected to complete all of his law school coursework by December 30, 2014. The CSM granted appellant's motion to reduce his basic child-support obligation to $500 per month, effective September 1, 2014, through December 31, 2014, when appellant was a full-time law student. But because the CSM determined that appellant completed his schooling at the end of 2014 and was self-limiting his job search, the CSM reinstated appellant's basic child-support obligation of $761,
A valid child-support order remains in effect until a party moves to modify the order, and the district court may entertain a motion to modify "from time to time." Minn. Stat. § 518A.39, subd. 1 (Supp. 2015); see Dakota County v. Gillespie, 866 N.W.2d 905, 909 (Minn. 2015). A basis for modification may be shown if the terms of the existing support order are "unreasonable and unfair," which may be demonstrated by "substantially increased or decreased" income of an obligor or obligee, or the "substantially increased or decreased" needs of the obligor, obligee, or child. Id., subd. 2(a)(1)-(2) (Supp. 2015). If the district court modifies a child-support order, the modification may be made retroactive only with respect to the "period during which the petitioning party has pending a motion for modification but only from the date of service of notice of the motion on the responding party and on the public authority if public assistance is being furnished or the county attorney is the attorney of record." Id., subd. 2(e) (Supp. 2015); see Dakota County, 866 N.W.2d at 910 (interpreting this statutory language as "any modification of support—for whatever underlying reason—may be retroactive only, at the earliest, to the date of service of notice of the motion to modify"); Lee v. Lee, 775 N.W.2d 631, 643 (Minn. 2009) (interpreting this statutory language, in the context of a spousal maintenance dispute, to mean "that the choice of retroactive date is committed to the discretion of the district court, as long as the date chosen is within the statutory limits").
"[T]he district court enjoys broad discretion in ordering modifications to child support orders." Putz v. Putz, 645 N.W.2d 343, 347 (Minn. 2002). An appellate court "will reverse a district court's order regarding child support only if we are convinced that the district court abused its broad discretion by reaching a clearly erroneous conclusion that is against logic and the facts on record." Id. This court has applied the abuse-of-discretion standard of review to decisions issued by CSMs, and the Minnesota Supreme Court has acknowledged this court's use of that standard, but it has not addressed the propriety of doing so. Id. at 347-48.
Appellant challenges the portion of the CSM order requiring him to pay $500 per month for basic child support from September 2014 to December 2014. Following the January 8, 2015 hearing, the CSM found that appellant provided evidence to show that he had been involuntarily terminated from his engineering position and received unemployment benefits that ended in September 2014, but that he was attending law school full time until the end of December 2014.
Appellant did not seek to reduce his monthly basic support obligation below $500 for this period. Appellant now seeks to further reduce his basic support for the same period, but the district court did not err by failing to grant relief that appellant did not request. Because appellant did not ask the CSM to reduce his basic support obligation to less than $500 per month for this period, or offer a legal theory for doing so, appellant may not seek a further reduction on appeal. See Kunza v. St. Mary's Reg'l Health Ctr., 747 N.W.2d 586, 589 (Minn. App. 2008) (stating that "[a] party may not obtain review" of a litigated issue "under a different theory"); see also Sec. Bank of Pine Island v. Holst, 298 Minn. 563, 564, 215 N.W.2d 61, 62 (1974) ("It is elementary that on appeal a case will be considered in accordance with the theory on which it was pleaded and tried, and a party cannot for the first time on appeal shift his position." (quotation omitted)). Further, because the CSM did not consider the issue, we decline to consider it for the first time on appeal. Thiele v. Stich, 425 N.W.2d 580, 582 (Minn. 1988).
Appellant argues that the CSM abused her discretion by ordering his basic support obligation to return to $761 per month beginning in January 2015 following the conclusion of his legal studies. The CSM imputed income to appellant to arrive at this amount because she found that appellant "failed to demonstrate that he is not voluntarily unemployed." The CSM also found that appellant "has completed his schooling, he is not making a diligent effort to find employment, and is self-limiting his job search." Regarding appellant's job search, the CSM found:
"If a parent is voluntarily unemployed, underemployed, or employed on a less than full-time basis, or there is no direct evidence of any income, child support must be calculated based on a determination of potential income." Minn. Stat. § 518A.32, subd. 1 (2014). A parent will not be considered voluntarily unemployed or underemployed if the unemployment or underemployment "is temporary and will ultimately lead to an increase in income" or "represents a bona fide career change that outweighs the adverse effect of that parent's diminished income on the child." Id., subd. 3(1)-(2) (2014). If a parent is voluntarily unemployed, underemployed, or employed on less than a full-time basis, determination of potential income may be based on "the parent's probable earnings level based on employment potential, recent work history, and occupational qualifications in light of prevailing job opportunities and earnings levels in the community." Id., subd. 2(1) (Supp. 2015).
The CSM found that appellant was voluntarily unemployed because he "completed his schooling, he is not making a diligent effort to find employment, and is self-limiting his job search." The record fully supports this finding, and we defer to the CSM's credibility determinations that provided the basis for it. See Sefkow v. Sefkow, 427 N.W.2d 203, 210 (Minn. 1988) ("Deference must be given to the opportunity of the [fact-finder] to assess the credibility of . . . witnesses."). Appellant stated that he had only one phone interview and applied for only four positions in the previous six-week period. Also, the record does not show that any benefit from the change in appellant's career from engineer to attorney would outweigh the adverse effect to C.A. from appellant's diminished income due to making the career change. The CSM did not abuse its discretion by imputing income to appellant in calculating his ongoing basic support obligation.
Appellant argues that the CSM erred by declining to reduce his child-support arrears. The CSM found that appellant now "owes arrears of more than $13,000," with the majority owed to respondent personally. Appellant sought to have his support arrears reduced to $6,000. The CSM denied appellant's request because "he is seeking retroactive modification beyond the date of service of the present motion." This court applies a de novo standard of review to interpret statutes in child-support matters. Hennepin Cty. v. Hill, 777 N.W.2d 252, 254 (Minn. 2010).
Under Minn. Stat. § 518A.39, subd. 2(e), "A modification of support . . . may be made retroactive only with respect to any period during which the petitioning party has pending a motion for modification but only from the date of service of notice of the motion on the responding party . . . ." For purposes of this appeal, appellant served a motion to modify his child support on August 13, 2014. Therefore, the CSM properly refused to consider whether child-support arrears should be reduced for the period before that date. As to the period when the motion was pending, from August 13, 2014, to January 8, 2015, appellant offered no factual grounds for a reduction of past support, and his appellate brief does not address this period. The CSM did not err by declining to grant appellant's motion to reduce his child-support arrears.
Minn. Stat § 518A.26, subd. 3 (2014).