As a major part of his character's humor, The Mole is seen with a lot of occupations, and due to his blindness, is often incompetent in doing so, in a similar vein to Lumpy with his stupidity. In fact, behind Lumpy, he has the second most occupations in the entire series. Below is a list of all of them.
Christmas Play Light Effects Helper
The Mole is seen with this occupation in Class Act. He wasn't disastrously incompetent and he didn't know where Toothy was on the stage due to his disability, though when Lumpy coughed, he realized his mistake and rectified it.
He has this occupation in Mole in the City. He is surprisingly competent at this job, despite the amount of stealth it requires and manages to successfully kill The Rat and keep the briefcase safe, and he was competent at using his gadgets.
He has this job in From Hero to Eternity. Very little can actually be said about his work here, though he did nothing wrong until Splendid made the whirlpool that killed him and several other Tree Friends.
The Mole has this job in Concrete Solution, where he guided a truck with metal support wires near his face, resulting in his death.
The Mole is shown to be a fireman in Who's to Flame? where he was incompetent, as he didn't question the difference between a fuel tank opening and a fire hydrant, and plugged the hose in the fuel tank instead. He also managed to fall down the sewers and caused the entire town to explode by lighting a match there.
The Mole has this occupation in Every Litter Bit Hurts, where he isn't competent. He is seen jabbing around randomly at objects mistakenly thinking they are litter, and injured Sniffles' foot in the process. He also jabbed a hole in Giggles' heart not thinking much of where his stick is going.
Hot Dog Vendor
The Mole has this occupation in Chew Said a Mouthful. He was seen serving Mime a hot dog, and it seems that, despite limited screen time, he was surprisingly good at this, as it wasn't his fault when Nutty accidentally took his stand and made him kill Mime.
He has this role in See What Develops where Lumpy makes a poor choice of using him instead of Sniffles to go and take a photo of the mall opening. He is shown to be inept at working a camera and at one point mistakes a gumball machine for a camera, and also takes a photo of Splendid's alternate persona.
He has this role in Idol Curiosity and manages to steer the ship into a huge iceberg (may have been due to The Cursed Idol being on board.
Surfboard Shack Owner
In Wipe Out! The Mole has this occupation. His competence is extremely low, as he is unable to help Handy with his zip, killing him in the process, mistakes Handy's heart for surfboard polish and mistakes Lumpy for a surfboard and shreds him to death.
Airport Security Guard
In Wingin' It The Mole works as a security guard at the airport. He mistakes a vending machine for Lumpy and arrests it.
In Easy Comb, Easy Go The Mole is a barber. He manages to shave a lot of Lumpy's skin off, and also chops most of Disco Bear's hair off, but later cuts his hair in a more appropriate way.
Blood Drive Worker
The Mole holds this occupation in the episode In a Jam. He apparently manages to get some blood from Nutty with no ill effect, though he manages to take a chair's IV instead of Cuddles and injures both of Cuddles' arms and wastes a lot of donatable blood. He also turns Cuddles into a chair using the previously taken Chair IV.
He has this occupation in Hear Today, Gone Tomorrow. He is seemingly able to play music well and evidently impresses Lumpy with his music, which makes Lumpy pay him (or attempt to do so).
Music Shop Owner
He runs a music shop in Autopsy Turvy (Double Whammy Part II). Lifty and Shifty take advantage of his disability and break into his shop while he is cleaning it. He treads on a piece of glass in the process.
He is seen collecting money for Charity in We're Scrooged!, fails to notice Lumpy stealing from his jar and mistakes Lumpy's teeth for chatty teeth.
In Wrath of Con, The Mole is a security guard, and while failing to notice Cuddles and Toothy, somehow notices Sniffles and realizes he has lost his pass.
Ice Cream Vendor
He had this job in The Carpal Tunnel of Love. He accidentally serves a drink to Cuddles and Giggles with Toothy's eye inside the cup.
Doughnut shop worker
In The Chokes on You, The Mole makes the first batch of doughnuts with no issues. However, he later makes doughnuts out of Lumpy's hand and fails to notice the moose's pained screams.
The Mole helps Lumpy report the news in Breaking Wind as a cameraman.
The Mole has had this role in two episodes so far.
In All In Vein he delivers some food to Lumpy with no disaster, however drives into a railway gate on the way back.
In Buns of Steal he is seen picking up buns from a shop and the deaths that he caused were mostly the fault of Lifty and Shifty.
He has this role in By The Seat Of Your Pants and very little can be said about his job here.