Four Stormont bills on issues from fair employment to fracking have fallen as MLAs accept there is not enough time to pass the legislation before the election.
Parties expressed their disappointment and frustration after the Assembly acknowledged there was "no realistic prospect" of the four Private Members' Bills being completed in the coming weeks.
They include a bill by Alliance MLA Chris Lyttle aimed at tackling the exclusion of teaching from legal protections against religious discrimination in recruitment.
People Before Profit MLA Gerry Carroll's bill to remove some restrictions on trade union and labour relations will fail to progress before the Assembly is dissolved.
And two bills brought by Sinn Féin MLAs - on banning fracking and ending zero-hour contracts - are also not being considered in the planning of future Assembly sittings before May's election.
Mr Carroll said his bill had "shamefully" been excluded in the prioritisation of proposed legislation.
The West Belfast MLA said his bill would "dramatically overhaul the landscape for workers and trade unions by increasing their rights".
"Given the failure of the Executive to address issues like low pay, soaring cost of living and poor working conditions, there is an onus on Stormont to enable workers to fight back for better," he added.
"We cannot allow outdated anti-union legislation to stay on our books - we need urgent change to give workers and their families a fighting chance."
Sinn Féin expressed disappointment that there is not sufficient time in this Assembly mandate to conclude its bills.
It added: "However, we are content that, in the absence of action by the Economy Minister, we brought a clear focus to the issue of zero-hour contracts and the need to protect workers in low-paid employment. We will return to this legislation if this issue is not addressed early in the new mandate."
The party said it would move legislation to address fracking in the next mandate if Stormont party commitments to a ban are not acted upon.
It added: "Sinn Féin are committed to delivering as much good legislation as possible in the remainder of this mandate - notwithstanding the limitations placed on the Assembly by the DUP's collapse of the Executive."
In a letter to MLAs on Tuesday, Speaker Alex Maskey set out plans to maximise the time available for politicians to consider and vote on important bills and urgent legislation.
An Assembly spokeswoman said the four Private Members' Bills (PMBs) have either only recently had their second stage debate or have yet to do so.
"With just over five weeks until the last week of Assembly sittings, there is no realistic prospect of these bills having sufficient time to return to the Assembly to complete all of the required steps," she said.
"Therefore, while there may be an opportunity for the two remaining bills to have a timed second stage debate to allow the issues to be raised, the business committee is not taking them into account when planning for the remaining Assembly sittings.
"However, the Speaker made clear in October 2021 that priority was also being given to advancing as much legislation as possible within the PMB system which could be taken forward in the future.
"Now that these members have produced draft bills, there will be the option for them, or party colleagues, to seek to take them forward early in the next mandate when much more time is normally available for legislation."
