This information comes from a company called Dynamic Signal. It sells communications systems that enable businesses to send messages to workers' mobile devices.
The Dynamic Signal study involved 1,001 people who work in the United States. They answered a series of questions online at the beginning of 2019.
The study found that 80 percent of the workers reported feeling stressed, or under pressure, because of poor communication by their employers.
The same study showed that more than 60 percent of those asked said they are ready to leave their companies.
And, it said the most unsatisfied workers are those who cannot look at work email regularly. They include workers in stores, hotels, restaurants, hospitals and buildings where products are stored, as well as delivery drivers. These workers are more likely to say that their companies communicate better with employees who work in offices.
Russ Fradin is the head of Dynamic Signal. He says that, over time, many businesses have stayed the same, but what workers expect has changed.
弗雷丁（Russ Fradin）是动态信号公司的负责人。他说， 随着时间推移，很多企业维持现状，但是工人们的期望发生了变化。
In the past, companies communicated with employees by putting up signs in the break room or on the factory floor. Or they might have used newsletters or magazines. But today, 77 percent of Americans own smartphones, and workers are used to getting information "pushed" to them immediately.
Their phones can show information about bank account balances, sporting events and possible love interests from a dating service, notes Fradin. So, he says, when workers receive information they need to know for their jobs an hour late, or three days late or two weeks late, they are likely to be angry.
"It's really just about bringing the types of tools around your mobile phone that everyone is used to in their day-to-day life into the workplace," he adds.
Other studies also show a growing dissatisfaction with how workplaces communicate to employees. A company called Staffbase produces software programs for workplace communication. It says that 74 percent of U.S. employees feel they are "missing out on company news and information."
In addition, a 2017 Gallup survey found that just 13 percent of employers thought that company communications were effective.
The Harvard Business Review also published an article about how companies can use mobile phone applications to improve employee communication.
For example, the story said, businesses could send company announcements or information about payments and other assistance directly to workers on their phones.
Improving workplace communications can be good for a company's profit. Gallup's 2017 State of the American Workplace Report found that companies with more engaged workers keep employees longer and bring in more money.
I'm Kelly Jean Kelly.