Newbie Needing Help With Sql Script

I keep getting this error on this script can some one help me out.

There is an error in the query. The data types varchar and sql_variant are incompatible in the add operator.
The multi-part identifier "LANGUAGES.DESCRIPTION" could not be bound.
The multi-part identifier "LANGUAGES.DESCRIPTION" could not be bound.

 


SELECT 'Quarter All' as 'qtr',
       COUNT(JOB.JOBID) as 'transcount',
       COUNT(DISTINCT JOB.PATIENTID) as 'patient count',
       SUM(JOB.LANGUAGE_TCOST) as 'lcost',
       SUM(JOB.LANGUAGE_DISC_COST) as 'dlcost',
       AVG(JOB.LANGUAGE_DISC) as 'avgLDisc',
       SUM(JOB.LANGUAGE_TCOST) + SUM(JOB.LANGUAGE_DISC_COST) as 'LGrossAmtBilled',
       SUM(JOB.LANGUAGE_TCOST) / COUNT(DISTINCT JOB.PATIENTID) as 'PatAvgL',
       SUM(JOB.LANGUAGE_TCOST) / COUNT(JOB.JOBID) as 'RefAvgL',
       SUM(JOB.LANGUAGE_DISC) as 'avgPercentDiscL',
       JOB.JURISDICTION,
       PAYER.PAY_COMPANY,
       PAYER.PAY_CITY,
       PAYER.PAY_STATE,
       PAYER.PAY_SALES_STAFF_ID,
       JOB.INVOICE_DATE,
       JOB.JOBOUTCOMEID,
       JOB.SERVICEOUTCOME,
       INVOICE_AR.INVOICE_NO,
       INVOICE_AR.INVOICE_DATE AS EXPR1,
       INVOICE_AR.AMOUNT_DUE,
       INVOICE_AR.CLAIMNUMBER,
       LANGUAGES.DESCRIPTION
      

FROM JOB
       INNER JOIN INVOICE_AR
                ON JOB.JOBID = INVOICE_AR.JOBID
       LEFT OUTER JOIN PAYER
                ON PAYER.PAYERID = JOB.PAYERID
       LEFT OUTER JOIN STATES
                ON JOB.JURISDICTION = STATES.INITIALS

WHERE
      (INVOICE_AR.AMOUNT_DUE > 0)
AND
      (INVOICE_AR.INVOICE_DATE BETWEEN @startdate and @enddate)
AND  
      (MONTH(INVOICE_AR.INVOICE_DATE) IN (1,2,3,4,5,6,7,8,9,10,11,12))
AND  
      (PAYER.PAY_COMPANY like '%' + @Company + '%')
       
       
Group By
        JOB.JURISDICTION,
        PAYER.PAY_COMPANY,
        PAYER.PAY_CITY,
        PAYER.PAY_STATE,
        PAYER.PAY_SALES_STAFF_ID,
        JOB.INVOICE_DATE,
        JOB.JOBOUTCOMEID,
        JOB.SERVICEOUTCOME,
        INVOICE_AR.INVOICE_NO,
        INVOICE_AR.INVOICE_DATE,
        INVOICE_AR.AMOUNT_DUE,
        INVOICE_AR.CLAIMNUMBER,
        LANGUAGES.DESCRIPTION
Order By 'QTR' asc