Since taking office in January, President Donald Trump has worked with the Republican-led U.S. Congress to stall or wipe out dozens of regulations. Wielding a legislative tool called the Congressional Review Act, Republicans voided more than a dozen rules finalized at the end of the Obama administration. Before Trump's inauguration, that law had been used only once in its 21-year history.

But chopping down Washington's “dense thicket of rules, regulations and red tape,” as Trump described it in June, doesn't always come so easily—or quickly. For a number of other regulations, the Trump administration has been playing the delay game.

An analysis published this week by the Center for Progressive Reform, a liberal think tank, showed that 42 rules have been delayed under the Trump administration and another 13 have been placed under review. The assessment did not include the rules covered by the initial freeze that Trump's chief of staff, Reince Priebus, put on all pending rules when the new administration took office in January.

Companies and their industry groups have seized on the delays to try to retool regulations. In some instances, trade groups have argued against setting any tentative date in favor of indefinite delay. In other instances, business groups have pushed for more time to comment on a proposal to change a rule.

To be sure, the delay strategy won't be smooth for Trump's agencies. Already, consumer and public interest groups are suing various agencies over the kick-the-can approach, and at least one federal appeals court recently said U.S. environmental regulators need to move forward on a rule the agency wanted to punt.

Here's a snapshot of three regulations caught up in Trump's slow-walk approach.

When the Occupational Safety and Health Administration proposed requiring employers to submit information about workplace injuries and illnesses to a public database, the National Retail Federation raised concerns that unions would use the data to “pursue a more aggressive organizing agenda.”

Sysco Corp. asked the agency how it would address “employer risk of loss to their reputation, financial standing, and legal exposure if injury and illness information is inaccurately reported or improperly disclosed or used.” Delta Airlines said it was “concerned that this proposal is overly burdensome and will add little value,” while also voicing worries about how OSHA would “scrub” the data and protect workers' privacy.

The rule was finalized in 2016 and took effect Jan. 1, with a July 1 deadline for reports. But OSHA never set up a website to receive the reports and has since pushed the deadline to Dec. 1, saying it “intends to issue a separate proposal to reconsider, revise, or remove other provisions of the prior final rule.”

As the Cincinnati-based Riverfront Steel Inc. noted in a July 10 comment, “The rule should be delayed for obvious reasons, the government isn't even set up to accept the filings as of this date.” (OSHA later announced it would launch an application to receive injury data on Aug. 1.)

Industry groups welcomed the delayed deadline—but the U.S. Chamber of Commerce wasn't entirely satisfied. The chamber said “employers would be better served” by OSHA indefinitely staying the rule.

“Merely delaying the submission of these reports suggests OSHA will activate the requirement on Dec. 1. Employers will begin preparing to submit their forms months ahead of that date. If OSHA then concludes, through the comprehensive rulemaking, to rescind this requirement, then employers will have spent their resources for no purpose,” the chamber wrote in a letter to the agency.

Delay at the FDA 'Upends Plans'

Indeed, some delays have come on such short notice that companies had no chance of saving on compliance costs.

Just days before it was set to take effect, the U.S. Food and Drug Administration delayed a regulation requiring calorie totals to be posted on menus at chain restaurants, along with grocery stores and some convenience stores. The rule is now slated to take effect in May 2018.

In a recent letter, the grocery chain Publix said it had worked the past three years to develop a “best-in-class” program to comply with the rule. The company recommended that the FDA use the delay to revise the rule to allow more flexibility with font sizes and exempt menu items meant to serve multiple people.

Another sector affected by the rule, the restaurant industry, was “irate about the 11th-hour change,” Politico reported.

“This delay upends plans that have been in motion for years throughout the food industry,” said Cicely Simpson, executive vice president for government affairs at the National Restaurant Association.