>yes, it does run if I remove any other field from the nrh14000 table or any other table. I dont think i've exceed the caracter limit.

SELECT some fields, ... nrh14000.Dir_emp ; <<--- This field is the problem
	FROM nrh10300 , nrh10200, nrh14000 ;
	INTO TABLE outrh\Maemp ;
	WHERE nrh10200.Numemp = nrh10300.Numemp ;
	AND nrh14000.Numemp = nrh10300.Numemp ;
	AND (nrh10300.Numemp < 0 ;
	AND nrh10200.Tarchc = 'S' ;
	<B>AND nrh10300.Tnoemp < 'J' ;
	AND nrh10300.Tnoemp < 'P' ;</b>
	AND nrh10300.Tnoemp < 'B' ;
	AND nrh10300.Numemp IN ;
           (SELECT nrh34100.Numemp FROM nrh34100 WHERE nrh34100.Checador < 0)) ;
	AND &cDepSec ;
	ORDER BY nrh10300.Numemp

You can remove highlighted lines w/o affecting your query because nrh10300.Tnoemp would be less than 'J' or 'P' if it's less than 'B'.
If query runs than you certainly exceeded a limit.