what was Barney Rubbles job??

The OFFICIAL answer from Hanna-Barbera was Barney worked for Pebble Rock and Travel Company. His boss was Mr. Pebble (voiced by the great Paul Frees).

Barney's office and boss can both be seen in episode 7 of season 1 called "The Babysitters".

Did anyone who answered that Barney worked in the quarry with Fred ever notice that they would carpool together but never went to the same job? Did anyone notice that we never actually saw Barney working at the quarry?

There was one episode where Barney worked at the quarry and becomes vice-president called 'Fred's New Boss' (season 2). But he didn't stay there past the episode.

Although, Fred and Barney DID work at the quarry together during The Pebbles and Bamm-Bamm Show and The Flintstones Comedy Hour...but not during the original run of The Flintstones (other than the episode mentioned above).

Occasionally he worked with Fred in the quarry, but for the most part he was unemployed.

Pebbles thief

i know he worked in the rock quarry where fred worked for mr. slate. doing what i am not sure.

didn't he wrk in the rock place w fred and for mr. slate?

to harass fred flinstone