108.151(7)(c)(c) The fund’s treasurer shall determine the total amount due from employers electing reimbursement financing under this section that is uncollectible as of June 30 of each year, but not including any amount that the department determined to be uncollectible before January 1, 2004. No amount may be treated as uncollectible under this paragraph unless the department has exhausted all reasonable remedies for collection of the amount, including liquidation of the assurance required under sub. (4). The department shall charge the total amounts so determined to the uncollectible reimbursable benefits account under s. 108.16 (6w). Whenever, as of June 30 of any year, that account has a negative balance of $5,000 or more, the treasurer shall, except as provided in par. (i), determine the rate of an assessment to be levied under par. (b) for that year, which shall then become payable by all employers that have elected reimbursement financing under this section as of that date. 108.151(7)(d)(d) The rate of assessment under this subsection for each calendar year shall be a rate, when applied to the payrolls of all employers electing reimbursement financing under this section for the preceding calendar year, that will generate an amount that equals the total amount determined to be uncollectible under par. (c), but not more than $200,000 for any year. 108.151(7)(e)(e) Except as provided in par. (f), the rate of each employer’s assessment under this subsection for any calendar year is the product of the rate determined under par. (d) multiplied by the employer’s payroll for the preceding calendar year, as reported by the employer under sub. (8) or s. 108.15 (8), 108.152 (7), 108.17 (2) or 108.205 (1) or, in the absence of reports, as estimated by the department. 108.151(7)(f)(f) If any employer would otherwise be assessed an amount less than $20 for a calendar year, the department shall, in lieu of requiring that employer to pay an assessment for that calendar year, apply the amount that the employer would have been required to pay to the other employers on a pro rata basis. 108.151(7)(g)(g) The department shall bill assessments to employers under this subsection in the same manner as provided in sub. (5) (f) for the month of September in each year, and the assessment is due for payment in the same manner as other payments under sub. (5) (f). If any assessment is past due, the department shall assess interest on the balance due under s. 108.22. If any employer is delinquent in paying an assessment under this subsection, the department may terminate the employer’s election of reimbursement financing under this section as of the close of any calendar year in which the employer remains delinquent. 108.151(7)(h)(h) If the payroll of an employer for any quarter is adjusted to decrease the amount of the payroll after an employment and wage report for the employer is filed under s. 108.205 (1), the department shall refund any assessment that is overpaid by the employer under this subsection as a result of the adjustment. 108.151(7)(i)(i) In lieu of or in addition to assessing employers as provided in par. (b), the fund’s treasurer may apply amounts set aside in the fund’s balancing account under s. 108.155 (2) (a) to amounts determined to be uncollectible under par. (c) by transferring those amounts to the account under s. 108.16 (6w). The fund’s treasurer may not act under this paragraph whenever the balance remaining of the amount set aside under s. 108.155 (2) (a) is less than $1,750,000 and may not act to reduce the amount set aside below that amount. 108.151(8)(8) Reports. Each nonprofit organization that is an employer shall make employment and wage reports to the department under the same conditions that apply to other employers. 108.152108.152 Financing benefits for employees of Indian tribes. 108.152(1)(1) Election of reimbursement financing. Each Indian tribe that is an employer may, in lieu of paying contributions under ss. 108.17 and 108.18, elect reimbursement financing for itself as a whole or for any tribal units or combinations of tribal units that are wholly owned subdivisions, subsidiaries, or business enterprises, as of the beginning of any calendar year, subject to the following conditions: 108.152(1)(a)(a) The Indian tribe or tribal unit shall file a written notice of the election with the department before the beginning of that year except that, if the Indian tribe or tribal unit became an employer as of the beginning of that year, it shall file the notice within 30 days after the date of the determination that it is an employer. 108.152(1)(b)(b) An Indian tribe or tribal unit whose election of reimbursement financing is terminated under sub. (2) (a) may not thereafter reelect reimbursement financing unless it has been subject to the contribution requirements of ss. 108.17 and 108.18 for at least 3 calendar years thereafter and is not, at the time of filing such reelection, delinquent under s. 108.22. 108.152(1)(d)(d) If the Indian tribe or tribal unit is an employer before the effective date of an election, ss. 108.17 and 108.18 shall apply to all employment before the effective date of the election, but after all benefits based on prior employment have been charged to any account that it has had under s. 108.16 (2), the department shall transfer any positive balance or charge any negative balance remaining therein to the fund’s balancing account as if s. 108.16 (6) (c) and (6m) (d) applied. 108.152(2)(a)(a) An Indian tribe or tribal unit that elected reimbursement financing may terminate its election as of the close of the 2nd calendar year to which the election applies, or at the close of any subsequent calendar year, by filing a written notice of termination with the department before the close of that year. 108.152(2)(b)(b) If an Indian tribe or tribal unit terminates an election under this subsection, the employer’s contribution rate is 2.5 percent on its payroll for each of the next 3 calendar years. 108.152(4)(4) Reimbursement account. The department shall maintain a reimbursement account, as a subaccount of the fund’s balancing account, for each Indian tribe, tribal unit, or combination of tribal units in accordance with any valid election made under subs. (1) and (5) and subject to the procedures and conditions provided for other employers under s. 108.151 (5). 108.152(5)(5) Group reimbursement account. An Indian tribe that has elected reimbursement financing for tribal units or one or more combinations of tribal units may request to have specified tribal units treated as one employer for purposes of this chapter. The department shall approve any such request subject to the following conditions: 108.152(5)(a)(a) The tribal units shall be so treated for a period of at least the 3 calendar years following their request, unless their election of reimbursement financing is terminated under sub. (2) or (6), but the Indian tribe may discontinue the treatment as of the beginning of any calendar year following that period by filing notice with the department prior to the beginning of that calendar year. 108.152(5)(b)(b) The tribal units shall be jointly and severally liable for any required reimbursements, together with any interest thereon and any penalties or tardy filing fees. 108.152(5)(c)(c) The Indian tribe shall designate one or more individuals to act as an agent for all members of the group for all fiscal and reporting purposes under this chapter. 108.152(6)(a)(a) If an Indian tribe or tribal unit fails to pay required contributions, reimbursements in lieu of contributions, penalties, interest, fees, or assessments within 90 days of the time that the department transmits to the tribe a final notice of delinquency: 108.152(6)(a)1.1. The department shall immediately notify the federal internal revenue service and the federal department of labor of that failure. 108.152(6)(a)2.2. Any valid election of reimbursement financing is terminated as of the end of the current calendar year. 108.152(6)(a)3.3. The department may consider the Indian tribe not to be an employer and may consider services performed for the tribe not to be employment for purposes of this chapter. 108.152(6)(b)(b) An Indian tribe whose prior election of reimbursement financing has been terminated under par. (a) may not thereafter reelect reimbursement financing unless it has been subject to the contribution requirements of ss. 108.17 and 108.18 for at least one calendar year thereafter and is not delinquent under s. 108.22 at the time that it files a request for reelection. 108.152(6)(c)(c) The final notice of delinquency specified in par. (a) shall include information that failure to make full payment within the prescribed time will cause the Indian tribe to be liable for taxes under the federal Unemployment Tax Act (26 USC 3301, et seq.), will cause the tribe to be precluded from electing reimbursement financing, and may cause the department to determine that the tribe is not an employer and that services performed for the tribe are not employment for purposes of this chapter.