WHY REMOTE WORK COULD LEAD TO LESS INNOVATION

Do chance encounters among employees of different Silicon Valley companies in coffee shops, restaurants and other public places lead to innovation? The answer is yes, say researchers who examined such “knowledge spillovers” in a study that may have implications for today’s work-from-home culture.

The researchers—Keith Chen of the University of California, Los Angeles, and David Atkin and Anton Popov of the Massachusetts Institute of Technology—tracked the locations of 425,000 phones using commercially available cellphone-location data. Though the data is anonymous and linked only to the unique ID number of each phone, the researchers surmised where the phone owners worked by looking at where the phones spent large parts of the workday, using a map of buildings occupied by Silicon Valley companies that have filed patents.

Examining instances where phone owners went outside the office and ended up near someone from another Silicon Valley company, they found 218 million episodes in which two workers from different companies were in the same place between September 2016 and November 2017.

For their study, they considered only situations in which both people were near each other for at least a half-hour, and used a probability technique to eliminate meetings that might have been arranged in advance. They also assumed that many of these people bumped into someone they already knew, such as a former colleague.

Sharing knowledge

Such chance meetings “may spark a conversation that leads to a transfer of knowledge or a collaboration,” the researchers wrote.

Next, the research team pulled up patent applications filed by the companies of the employees. Such applications list relevant patents from other companies in so-called patent citations. Patent citations are “one measure of which firms are influencing each other and how firms are sharing ideas,” says Prof. Chen, who studies behavioral economics and strategy at UCLA’s Anderson School of Management.

The researchers then worked backward in time. They looked for places where employees of a patent-filing company may have crossed paths with workers from companies cited in the patent application.

“We rewind the clock to a year before when they would have been developing this technology,” says Prof. Chen. “What school were they dropping their kids off at, what mall were they shopping at, what bar do they frequent. And you infer who was at that bar when they were there,” based on the phone-location data.

The goal, Prof. Chen says, is “to connect workers of the firm that is going to file the patent, at the establishment where we infer that patent was innovated, with what other workers they were interacting with.”

Next, the researchers calculated the overall number of such citations that appear to have been linked to unplanned encounters. The upshot: The researchers say that without these encounters, there would have been about 8% fewer cross-firm patent citations in the period covered by the phone-location data.

“There is a tremendous correlation between my workers’ meeting a lot with your workers, and my workers’ citing your workers’ patent,” says Prof. Chen.

The innovation boost from the encounters, by the team’s calculations, is about twice as large as a similar effect found by other research that looked for knowledge transfer based on whether two companies’ offices are near each other, Prof. Chen says.

Their study comes with some caveats. The researchers don’t know whether these employees actually spoke when they were in the same location, or, if they spoke, what they talked about. And they don’t know whether the workers’ jobs would have facilitated a tech discussion—they might have involved a Google HR staffer and an Apple maintenance person.

Still, the report shines a light on what some experts have long suspected: that random conversations involving people in similar industries can increase innovation.

Enrico Moretti, an economics professor at the University of California, Berkeley, says the study “significantly advances our understanding of knowledge spillovers and how they shape the geography of innovation.” Prof. Moretti, who says he has been working on the topic for 25 years, says, “I find this paper to be one of the most direct and convincing pieces of evidence on this question. It provides important insights into why Silicon Valley-style clusters of innovation exist.”

Remote work’s impact

Though the study involved cellphone data from before Covid, the researchers say it has implications for an era when many people work all or part of the time from home.

The researchers looked at people who occasionally worked from home in the study period, based on where their phones were located during daytime hours, and then at how that affected their probability of attending planned or serendipitous meetings with someone from another company who didn’t work from home, Prof. Chen says.

Looking at two hypothetical companies, the researchers extrapolated that if one-half of employees at each business work from home, their meetings of all types—serendipitous and planned—would fall 35% and patent citations between the companies would decline almost 12%.

“We think this means information exchange between firms is decreasing,” Prof. Chen says. “It is worrying. These businesses co-locate for a reason. If they can’t learn from each other, we think that is a big deal.”

“Presumably,” he adds, “an even bigger effect is the harm that it does to serendipity and flow of information and innovation within the firm.”

For years, global companies showcased their Chinese operations as a source of robust growth. A burgeoning middle class, a stream of people moving to cities, and the creation of new services to cater to them—along with the promise of the further opening of the world’s second-largest economy—drew companies eager to tap into the action.

Then Covid hit, isolating China from much of the world. Chinese leader Xi Jinping tightened control of the economy, and U.S.-China relations hit a nadir. After decades of rapid growth, China’s economy is stuck in a rut, with increasing concerns about what will drive the next phase of its growth.

Though Chinese officials have acknowledged the sputtering economy, they have been reluctant to take more than incremental steps to reverse the trend. Making matters worse, government crackdowns on internet companies and measures to burst the country’s property bubble left households and businesses scarred.

Lowered Expectations

Now, multinational companies are taking a hard look at their Chinese operations and tempering their outlooks. Marriott International narrowed its global revenue per available room growth rate to 3% to 4%, citing continued weakness in China and expectations that demand could weaken further in the third quarter. Paris-based Kering , home to brands Gucci and Saint Laurent, posted a 22% decline in sales in the Asia-Pacific region, excluding Japan, in the first half amid weaker demand in Greater China, which includes Hong Kong and Macau.

Pricing pressure and deflation were common themes in quarterly results. Starbucks , which helped build a coffee culture in China over the past 25 years, described it as one of its most notable international challenges as it posted a 14% decline in sales from that business. As Chinese consumers reconsidered whether to spend money on Starbucks lattes, competitors such as Luckin Coffee increased pressure on the Seattle company. Starbucks executives said in their quarterly earnings call that “unprecedented store expansion” by rivals and a price war hurt profits and caused “significant disruptions” to the operating environment.

Executive anxiety extends beyond consumer companies. Elevator maker Otis Worldwide saw new-equipment orders in China fall by double digits in the second quarter, forcing it to cut its outlook for growth out of Asia. CEO Judy Marks told analysts on a quarterly earnings call that prices in China were down roughly 10% year over year, and she doesn’t see the pricing pressure abating. The company is turning to productivity improvements and cost cutting to blunt the hit.

Add in the uncertainty created by deteriorating U.S.-China relations, and many investors are steering clear. The iShares MSCI China exchange-traded fund has lost half its value since March 2021. Recovery attempts have been short-lived. undefined undefined And now some of those concerns are creeping into the U.S. market. “A decade ago China exposure [for a global company] was a way to add revenue growth to our portfolio,” says Margaret Vitrano, co-manager of large-cap growth strategies at ClearBridge Investments in New York. Today, she notes, “we now want to manage the risk of the China exposure.”

Vitrano expects improvement in 2025, but cautions it will be slow. Uncertainty over who will win the U.S. presidential election and the prospect of higher tariffs pose additional risks for global companies.

Behind the Malaise

For now, China is inching along at roughly 5% economic growth—down from a peak of 14% in 2007 and an average of about 8% in the 10 years before the pandemic. Chinese consumers hit by job losses and continued declines in property values are rethinking spending habits. Businesses worried about policy uncertainty are reluctant to invest and hire.

The trouble goes beyond frugal consumers. Xi is changing the economy’s growth model, relying less on the infrastructure and real estate market that fueled earlier growth. That means investing aggressively in manufacturing and exports as China looks to become more self-reliant and guard against geopolitical tensions.

The shift is hurting western multinationals, with deflationary forces amid burgeoning production capacity. “We have seen the investment community mark down expectations for these companies because they will have to change tack with lower-cost products and services,” says Joseph Quinlan, head of market strategy for the chief investment office at Merrill and Bank of America Private Bank.

Another challenge for multinationals outside of China is stiffened competition as Chinese companies innovate and expand—often with the backing of the government. Local rivals are upping the ante across sectors by building on their knowledge of local consumer preferences and the ability to produce higher-quality products.

Some global multinationals are having a hard time keeping up with homegrown innovation. Auto makers including General Motors have seen sales tumble and struggled to turn profitable as Chinese car shoppers increasingly opt for electric vehicles from BYD or NIO that are similar in price to internal-combustion-engine cars from foreign auto makers.

“China’s electric-vehicle makers have by leaps and bounds surpassed the capabilities of foreign brands who have a tie to the profit pool of internal combustible engines that they don’t want to disrupt,” says Christine Phillpotts, a fund manager for Ariel Investments’ emerging markets strategies.

Chinese companies are often faster than global rivals to market with new products or tweaks. “The cycle can be half of what it is for a global multinational with subsidiaries that need to check with headquarters, do an analysis, and then refresh,” Phillpotts says.

For many companies and investors, next year remains a question mark. Ashland CEO Guillermo Novo said in an August call with analysts that the chemical company was seeing a “big change” in China, with activity slowing and competition on pricing becoming more aggressive. The company, he said, was still trying to grasp the repercussions as it has created uncertainty in its 2025 outlook.

Sticking Around

Few companies are giving up. Executives at big global consumer and retail companies show no signs of reducing investment, with most still describing China as a long-term growth market, says Dana Telsey, CEO of Telsey Advisory Group.

Starbucks executives described the long-term opportunity as “significant,” with higher growth and margin opportunities in the future as China’s population continues to move from rural to suburban areas. But they also noted that their approach is evolving and they are in the early stages of exploring strategic partnerships.

Walmart sold its stake in August in Chinese e-commerce giant JD.com for $3.6 billion after an eight-year noncompete agreement expired. Analysts expect it to pump the money into its own Sam’s Club and Walmart China operation, which have benefited from the trend toward trading down in China.

“The story isn’t over for the global companies,” Phillpotts says. “It just means the effort and investment will be greater to compete.”

Corrections & Amplifications

Joseph Quinlan is head of market strategy for the chief investment office at Merrill and Bank of America Private Bank. An earlier version of this article incorrectly used his old title.