But this desire to unionize faces some daunting challenges. In many corporations, the mentality is that any supervisor, whether a factory manager or retail manager, who fails to keep out a union is an utter failure. That means managers fight hard to quash unions. One study found that 57 percent of employers threatened to close operations when workers sought to unionize, while 47 percent threatened to cut wages or benefits and 34 percent fired union supporters during unionization drives.

Corporate executives’ frequent failure to listen to workers’ concerns — along with the intimidation of employees — can have deadly results. On April 5, 2010, a coal dust explosion killed 29 miners at Massey Energy’s Upper Big Branch coal mine in West Virginia. A federal investigation found that the mine’s ventilation system was inadequate and that explosive gases were allowed to build up. Workers at the nonunion mine knew about these dangers. “No one felt they could go to management and express their fears,” Stanley Stewart , an Upper Big Branch miner, told a congressional committee. “We knew we’d be marked men and the management would look for ways to fire us.”

The diminished power of unions and workers has skewed American politics, helping give billionaires and corporations inordinate sway over America’s politics and policymaking. In the 2015-16 election cycle, business outspent labor $3.4 billion to $213 million, a ratio of 16 to 1, according to the nonpartisan Center for Responsive Politics. All of the nation’s unions, taken together, spend about $48 million a year for lobbying in Washington, while corporate America spends $3 billion. Little wonder that many lawmakers seem vastly more interested in cutting taxes on corporations than in raising the minimum wage.

There were undoubtedly many reasons for Donald Trump’s 2016 victory, but a key one was that many Americans seemed to view him as a protest candidate, promising to shake up “the system” and “drain the swamp.” Many voters embraced Mr. Trump because they believed his statements that the system is rigged — and in many ways it is. When it comes to workers’ power in the workplace and in politics, the pendulum has swung far toward corporations.

Reversing that won’t be easy, but it is vital we do so. There are myriad proposals to restore some balance, from having workers elect representatives to corporate boards to making it easier for workers to unionize to expanding public financing of political campaigns to prevent wealthy and corporate donors from often dominating.

America’s workers won’t stop thinking the system is rigged until they feel they have an effective voice in the workplace and in policymaking so that they can share in more of the economy’s prosperity to help improve their — and their loved ones’ — lives.