The Welsh Church has granted equal pension rights to the civil partners of clergy members.
Employers are not currently required to give the same survivors' pensions to civil partners as they are to heterosexual spouses.
Pension schemes may legally exclude surviving civil partners from benefits accrued before 2005, on the grounds that civil partnerships did not exist before then.
Heterosexual surviving spouses have the right to all pension benefits, regardless of when they married.
During a two-day meeting finishing yesterday, the Church in Wales passed a motion to allow a change in its legislation giving the civil partners of clerics the right to all pension benefits.
If the changed legislation is passed at the next meeting in April, it will take immediate effect.
The Equality Act 2010 provides a legal exemption from providing pre-2005 pension rights to civil partners.
However, it is expected this exemption will be widely challenged in future.
Last month, global engineering firm Foster Wheeler changed its policy to give equal pension rights to civil partners ahead of legal action from a former employee.
Civil rights organisation Liberty will bring legal action in an employment tribunal in January on behalf of former Foster Wheeler worker Ian Waddy and his civil partner Trevor Skipp.
Foster Wheeler, despite changing its policy, denies discrimination on the grounds of sexual orientation.
However, Jennie Kreser, pensions partner at law firm Silverman Sherliker, said a ruling in favour of the couple could set a precedent in pensions law.
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