Whether clerical workers or executives, the majority confirmed the parental state of mind just  They complained of overly long workdays and frenetic home lives.
( ( Whether ( clerical ( ( workers or ) executives ) ) ) ( , ( ( the majority ) ( ( ( confirmed ( ( the ( parental state ) ) ( of mind ) ) ) ( just ( They ( complained ( of ( ( ( ( overly long ) workdays ) and ) ( frenetic ( home lives ) ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN Whether) (S (NP (JJ clerical) (NNS workers) (CC or) (NNS executives)))) (, ,) (NP (DT the) (NN majority)) (VP (VBD confirmed) (NP (NP (DT the) (JJ parental) (NN state)) (PP (IN of) (NP (NN mind)))) (SBAR (RB just) (S (NP (PRP They)) (VP (VBD complained) (PP (IN of) (NP (NP (ADJP (RB overly) (JJ long)) (NNS workdays)) (CC and) (NP (JJ frenetic) (NN home) (NNS lives)))))))) (. .)))
They never complained once of the length of their workdays. 
( They ( never ( ( ( complained once ) ( of ( ( the length ) ( of ( their workdays ) ) ) ) ) . ) ) )
(ROOT (S (NP (PRP They)) (ADVP (RB never)) (VP (VBD complained) (ADVP (RB once)) (PP (IN of) (NP (NP (DT the) (NN length)) (PP (IN of) (NP (PRP$ their) (NNS workdays)))))) (. .)))