(Reuters) -A federal judge in Texas on Friday struck down a U.S. National Labor Relations Board (NLRB) rule challenged by major business groups that would treat many companies as employers of certain contract and franchise workers and require them to bargain with unions representing them.

U.S. District Judge J. Campbell Barker in Tyler agreed with the challengers to the "joint employers" rule, including the U.S. Chamber of Commerce, that it was too broad and violates federal labor law. The rule, issued in October, had been set to take effect on Monday.

An NLRB spokeswoman and the Chamber of Commerce did not immediately respond to requests for comment after hours on Friday. The NLRB is expected to appeal Barker's decision to the New Orleans-based 5th U.S. Circuit Court of Appeals.

Industries such as manufacturing and construction rely heavily on staffing agencies and contractors to provide workers, and franchisers such as McDonald's, Burger King, and Dunkin' Donuts that are not typically involved in franchisees' day-to-day workplace issues.

The rule would treat companies as "joint employers" of contract and franchise workers when they have control over key working conditions such as pay, scheduling, discipline and supervision, even if that control is indirect or not exercised.

The NLRB and many unions have said the rule is needed to ensure that companies come to the bargaining table and can be held liable for labor law violations when they have control over the working conditions of these contract or franchise workers.

But business groups and many Republicans have said it would create confusion over when businesses are considered workers' employers, disrupting franchising and routine contracting arrangements.

Joint employment has been one of the most contentious labor issues for many U.S. businesses since 2015, when the NLRB during Barack Obama's presidency adopted a standard similar to the new one that trade groups said was unworkable and would upend the franchising industry.

The rule issued by President Joe Biden's administration would repeal one put in place during Donald Trump's presidency.

The U.S. Court of Appeals for the District of Columbia Circuit in 2018 sided with a sanitation company challenging the Obama-era standard, finding that the NLRB had not adequately explained what kind of indirect control could lead to a finding of joint employment. In 2020, the board adopted a rule favored by business groups requiring companies to have "direct and immediate" control over workers in order to be considered joint employers.