In its latest efforts to help end a nearly two-month strike by graduate student workers, Boston University proposed granting all PhD students access to a 12-month stipend, a university leader said Tuesday.

The proposal came during the 25th bargaining session between the university and the graduate worker’s union, said university provost Kenneth Lutchen in an email to BU community members. The strike by graduate workers, who teach classes, grade student work, and conduct research, has impacted classes and university life since late March.

The new 12-month stipend policy would enable all PhD students who were previously on eight-month stipends to work or conduct research over the summer to receive a minimum of $42,159 annually, Lutchen said.

“Students have repeatedly spoken of the challenges of living with an eight-month stipend and how it affects their financial security,” Lutchen said, adding: “We hope that this move at the bargaining table signals our goodwill and seriousness of purpose in moving toward resolution with [Boston University Graduate Workers Union] and reaching an agreement that supports our students.”

The union, which formed in 2022, represents about 3,000 masters, professional, and PhD students and is part of Service Employees International Union Local 509. Its strike calls for stronger health care coverage, pay, and benefits.

David Foley, president of SEIU 509, told the Globe that while the proposal is a “step in the right direction,” it’s a long overdue effort to address the economic insecurity experienced by graduate workers. It excludes hourly workers and does not address the needs of the many graduate workers already struggling to live in Boston on 12-month stipends, Foley said.

“Forty-two thousand dollars is still far from a living wage for any of our members, and we remain committed to fighting for a meaningful end to rent burden and financial insecurity,” Foley said in a statement. “The university has the means — and the obligation — to do better.”

The union said it expects to see more movement from the BU administration now that it has acknowledged graduate workers’ complaints about underpayment.

Currently about 560 grad students remain on strike, according to Rachel Lapal Cavallario, a BU spokesperson. That makes up 20 percent of salaried grad students and 10 percent of hourly ones, she said, according to student and faculty attestation data and hours submitted for hourly students.

As of May 8, about 80 percent of bargaining unit members that receive stipends have been working each week throughout the strike, according to BU’s negotiations team.

Graduate students are currently paid stipends between $27,000 to $40,000, according to the union. The university said these wages are for 20 hours of work per week, while grad workers claim to work more than that.

When the students began striking in March, they asked the school for about a $62,000 stipend, the union said, to which BU said it offered about $42,000. The union declined to counteroffer, BU said. The students are still advocating for the $62,000 stipend, according to the union.

In March, the school also offered to raise the minimum wage to $18 from $15 for hourly workers, and add children under age 6 to the health insurance plan for full-time PhD students.

Graduate workers help grade quizzes and teach lab sessions and supplementary class meetings known as discussion sections. Their absence throughout the strike caused classes and labs to be canceled throughout the semester, several students told the Globe. BU’s spring semester concluded earlier this month, with the summer term beginning on May 21, according to Lapal Cavallario.

The proposal for 12-month stipends came about in part because faculty cited difficulties recruiting PhD students in humanities and social sciences, Lutchen said.

“We appreciate the dedication and patience of everyone involved and are hopeful these efforts will produce significant progress as we head into the summer,” said Lutchen.

Another bargaining session is set to occur in coming weeks.

Material from prior Globe coverage was used in this report.

Esha Walia can be reached at esha.walia@globe.com.