Kenneth Mark never had much time for domestic duties. The dermatologist, who runs three high-end practices in Soho, the Hamptons and Aspen, Colo., typically spends “north of 60 hours a week” jabbing patients with Botox and fillers. His housekeeper of 20 years keeps his home in order, and when his first son was born last year, she became his nanny as well.

“She really takes care of everything,” Mark, 50, tells The Post. “She cleans the house and also watches the baby. She is almost like a house manager, cleaning lady and nanny rolled into one.”

Then the coronavirus pandemic swept the city.

“It was unfair to ask her to come in,” says Mark, who splits his time between Murray Hill and the Hamptons. “From a medical perspective, it was potentially dangerous for her and us.”

So for the last month, he’s been on diaper duty.

“It’s been a complete shock to our normal day-to-day life,” says Mark, who is still paying his housekeeper/nanny despite being unable to lean on her services. “I’m doing way more than I would under normal circumstances.”

Across the country, elites like Mark have been struggling to figure out how to deal without Jeeves during the COVID-19 outbreak.

Some are going to extreme lengths to keep their help close. Peter Mahler, the head of a private staffing agency, tells the Wall Street Journal that roughly 40 percent of his clients are quarantining with staff and paying them top dollar to do so — typically a 30 percent pay bump. Martha Stewart is reportedly isolating with her driver, housekeeper and gardener at her Bedford mansion.

“A lot of these high net worth individuals have in-person housekeepers, cleaning ladies and chefs still in their homes,” says an Upper East Sider who is hiding out in Amagansett. “If they let the housekeeper go home for the weekend, they could contract the virus and bring it back. So people who have live-in help are keeping them there. If staff do say, ‘Hey, we want to go back to our families,’ the answer is, ‘Fine, but you can’t come back until this is over.’ So people are having to make a decision: ‘Do I want to see my family, or do I want to continue to work and make money?’ It’s tough.”

Others, like Mark, find themselves in the awkward position of doing chores for the first time ever.

“You want to talk about the great equalizer?! People like us take things for granted,” says Seth MacFarlane on a recent episode of HBO’s “Real Time With Bill Maher.” “We take our housekeepers for granted. Things like laundry and changing the cat box . . . Even figuring out how to do floors. My God, it’s a hell of a lot harder than making TV.”

This is especially an issue for those who live in apartment buildings. Every top building in the city has banned personal staff and reduced building workers to the bare minimum — usually just the doorman and super.

“That stay-at-home mom who has a housekeeper and chef has had to let them go. Now they’re doing the diapers, putting the kids to sleep and making dinner,” says Philip Scheinfeld, a broker at Compass who grew up in a prominent Upper East Side building. “I’m sure Bravo would love to start filming these ladies. It would make a great show.”

Left on their own for the first time, bosses are learning exactly what the hell it is that their employees do.

A Fifth Avenue doctor who has decided to hold onto a sliver of normalcy by continuing to work from her office sans employees says she discovered on Day 1 just how helpless she was without her team of five assistants.

‘I didn’t even know where to put the trash. Usually the garbage is collected by my staff and they put it somewhere.’

“I didn’t even know where to put the trash,” she says. “Usually the garbage is collected by my staff and they put it somewhere. I still don’t know where that is.”

Her solution was to deputize her less-than-willing husband — and to bribe him with luxury medical treatments, such as Botox and Emsculpt.

“My husband is taking care of all the miscellaneous tasks, like answering phone calls, dropping off product orders at the post office, cleaning, and he even gets my lunch for me,” she says, noting that the trips to Dig Inn are taking an extra long time. “I really had to coax him . . . but he is earning his keep.”

The bright side? Rich kids are getting stuck with chore duty, too.

“My daughter is having to do everything for the first time in her entire life,” says an Upper East Side mother, who asked to remain anonymous, of her teenager. “She has always had daily help.”

Perhaps the lessons learned during quarantine will lead to a more self-sufficient, self-aware generation.

Then again, maybe not.

“She just texted me and said, ‘Do you know if mustard and pickles go into the refrigerator?’ ” says the exasperated mom.