Adjective : a conscientious judge. ,conscientious application to the work at hand.    From Dictionary.com. 

Arthur Buie of the Mayo Clinic said that after draft officials got over being choosy and started sending along pilonidal cyst cases, "overconscientious" Army & Navy surgeons began operating on all cysts, even uninfected "dimples.".    From Wordnik.com.  [TIME.com: Top Stories] Reference

The Lensmand was no tyrant, but shallow, and not overconscientious.    From Wordnik.com.  [The Growth of the Soil] Reference

Here was the “tallish old boy, nagged to a rag, overworked, overconscientious.”.    From Wordnik.com.  [More Work for the Undertaker]

Eleanor, thanks to the overconscientious digging about her roots, was acquiring a New England self-consciousness about her processes.    From Wordnik.com.  [Turn About Eleanor] Reference

As the saying goes, if a man takes office without meeting with the proper time, or is overconscientious in discharging his duties, or serves another without entering into his schemes,8 the reason is poverty.    From Wordnik.com.  [Han Shih Wai Chuan] Reference

Perhaps a lingering uneasiness about it - he was such a worrier, she often thought, such an overconscientious darling - struck through when Wang added, "Of course, you assume those things we knew will be there still.".    From Wordnik.com.  [Starfarers]

School girls naturally divide into fairly well-defined classes: the girl who is overanxious or overconscientious about her work, the girl who intends to comply with rules but has no special anxiety about results, and the girl who habitually takes chances in evading the preparation of lessons.    From Wordnik.com.  [Vocational Guidance for Girls] Reference

The other type of the overconscientious does definite harm to themselves.    From Wordnik.com.  [The Nervous Housewife] Reference

Especially is this true of the overæsthetic, overconscientious types described in Chapter III.    From Wordnik.com.  [The Nervous Housewife] Reference

Husband, and the Other Woman owes its existence, not to the charms of the other woman, but to the overconscientious wife.    From Wordnik.com.  [The Nervous Housewife] Reference

So he put a strong check upon his inclination to see the young woman, and, overconscientious as he was so likely to be, began almost to avoid her.    From Wordnik.com.  [Fair Harbor] Reference

Or the overconscientious woman may expend her energies in chasing the last bit of dirt out of her house but be willing to poison her family with three delicatessen meals a day.    From Wordnik.com.  [The Nervous Housewife] Reference

"Bad habits must not be formed" is the actuating motive of the overconscientious parents, for they do not seem to know that the "trial and error" method is the natural way of learning.    From Wordnik.com.  [The Nervous Housewife] Reference

This overconscientious person, unless she is made of steel springs and resilient rubber, breathlessly chasing this phantom all day and into the night, gives way under the strain, even though she have a dozen servants to help.    From Wordnik.com.  [The Nervous Housewife] Reference