FREMONT, CA—Tesla Motors violated hazardous-waste and air-emissions standards at its electric-car assembly plant here and will pay $86,000 in penalties and equipment costs as part of a settlement, the Environmental Protection Agency announced Monday.

FREMONT, CA--Elon Musk plans to work on the assembly line at his Tesla auto plant.

FREMONT, CA—The UAW wants to unionize the Tesla Motors assembly plant here. Tesla’s factory is the only U.S. assembly plant owned by an American car company that does not have union representation.

PALO ALTO, CA—Tesla Motors Inc. has received more than 325,000 reservations for its new Model 3 sedan. The pre-orders represent “about $14 billion in implied future sales, making this the single biggest one-week launch of any product ever,” the company said.

SAN CARLOS, CA—Tesla Motors Inc. has almost doubled its staff in the past year, from 5,859 personnel in 2013 to 10,161 in 2014.

DETROIT—Tesla Motors Inc. is asking its Michigan-based suppliers to pressure the state’s governor to veto a bill that would bar the California automaker from direct sales to customers in the state. Tesla will procure $170 million in parts and services from suppliers in the state in 2014.

RENO, NV—Tesla Motors has chosen Nevada as the site for a massive, $5 billion factory that will pump out batteries for a new generation of less expensive electric cars. Four other states—California, Texas, Arizona and New Mexico—were vying for the project and the estimated 6,500 jobs it will bring.

FREMONT, CA—Tesla Motors Inc. has halted production at its assembly plant here for the first time as it adds robots to accelerate production of electric sedans and prepares to build its Model X sport-utility vehicle. The $100 million upgrade will add 25 robots with a goal of boosting production by 25 percent.