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  <xs:element id="nsp_Aggregatenumberofsharesrepurchasedduringtheperiod" abstract="false" name="Aggregatenumberofsharesrepurchasedduringtheperiod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="nsp_PayrollWithholdingsIncludedInCashBalance" abstract="false" name="PayrollWithholdingsIncludedInCashBalance" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nsp_ApplicableMargin30DayLibor" abstract="false" name="ApplicableMargin30DayLibor" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="nsp_MunicipalBondMember" abstract="true" name="MunicipalBondMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="nsp_DepositsWorkersCompensation" abstract="false" name="DepositsWorkersCompensation" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nsp_StockPurchaseRightExercisableUponIndividualStockOwnershipPercentage13GInvestor" abstract="false" name="StockPurchaseRightExercisableUponIndividualStockOwnershipPercentage13GInvestor" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="nsp_Unbilled" abstract="false" name="Unbilled" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nsp_ClassOfWarrantRightConversionRatioOfWarrantorRightsToShareOfStock" abstract="false" name="ClassOfWarrantRightConversionRatioOfWarrantorRightsToShareOfStock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:decimalItemType"/>
  <xs:element id="nsp_NumberOfDaysInAdvanceOfBeginningOfReportingQuarterCarrierEstablishesCashFundingRates" abstract="false" name="NumberOfDaysInAdvanceOfBeginningOfReportingQuarterCarrierEstablishesCashFundingRates" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="nsp_WorkersCompensationMaximumEconomicBurdenFirstLayerOfClaimsPerOccurrence" abstract="false" name="WorkersCompensationMaximumEconomicBurdenFirstLayerOfClaimsPerOccurrence" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nsp_WorkersCompensationCostsPolicyTextBlock" abstract="false" name="WorkersCompensationCostsPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType"/>
  <xs:element id="nsp_WestMember" abstract="true" name="WestMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="nonnum:domainItemType"/>
  <xs:element id="nsp_ApplicableMarginFederalFundsRate" abstract="false" name="ApplicableMarginFederalFundsRate" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="nsp_HealthInsuranceCostsAbstract" abstract="true" name="HealthInsuranceCostsAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nsp_TimePeriodEstimateOfIncurredClaimCostsToBePaidIncludedInLongTermLiabilities" abstract="false" name="TimePeriodEstimateOfIncurredClaimCostsToBePaidIncludedInLongTermLiabilities" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nsp_WorkersCompensationLiabilityNetOfAdminFeesCurrent" abstract="false" name="WorkersCompensationLiabilityNetOfAdminFeesCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nsp_PercentageofourhealthinsurancecoverageprovidedbyUnited" abstract="false" name="PercentageofourhealthinsurancecoverageprovidedbyUnited" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="num:percentItemType"/>
  <xs:element id="nsp_DecreaseIncreaseInAccruedWorkersCompensationCostsForChangesInEstimatedLosses" abstract="false" name="DecreaseIncreaseInAccruedWorkersCompensationCostsForChangesInEstimatedLosses" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nsp_PayrollTaxesBenefitsAndWorkersCompensationCosts" abstract="false" name="PayrollTaxesBenefitsAndWorkersCompensationCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="nsp_CashCashEquivalentsAndMarketableSecuritiesAbstract" abstract="true" name="CashCashEquivalentsAndMarketableSecuritiesAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="nsp_WorkersCompensationAdministrativeFeesAccrued" abstract="false" name="WorkersCompensationAdministrativeFeesAccrued" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
