Employers were assessed on how well flexible and family-friendly working practices were embedded in the organisation, which policies were in place and how consistently they were utilised.
A statistical analysis on how well parents were supported in the organisation was also taken into account.
Joanne Waterworth, head of employer services at Working Families, said the most supportive employers are going beyond current legislation around flexible working.
The Flexible Working Bill, which passed in June, means employees can now make up to two flexible working requests within 12 months, and employers will have to respond to the request within two months rather than three.
The bill has also introduced a new requirement to consult with employees before flexible working requests are denied.
Waterworth told HR magazine: “These employers show they are way ahead of upcoming legislation. It isn't just beneficial to have a flex-friendly mindset, these employers will all have a head start when the changes come into effect next year.”
Read more: What is current best practice for working parents and carers?
Working Families found most (78%) organisations who entered the list provide details of the options to work flexibly on their website.
Meanwhile, nearly half (48%) advertise that they are open to talking about flexible working on all their job adverts.
Waterworth said: “In this increasingly competitive jobs market, these employers stand out for the value they put on their employees, which makes them employers of choice for working parents and carers.”
Fiona Baldwin, partner and board sponsor for gender at top 10 company Grant Thornton, said it was an honour to be named on the list.
Speaking to HR magazine, she said: "We are delighted to be named as a leading employer for working families, recognising our commitment to creating an inclusive workplace for all our people.
“People thrive when they can balance their lives with work, so we've developed flexible policies to support this balance.”
Read more: Flexible work gives working parents confidence to progress
Baldwin said a key change the firm has made is to provide more support for fathers.
She added: “This year, one of the key changes we made was the introduction of enhanced paternity policy, introducing six weeks paternity leave at full pay or 12 weeks paternity leave at half pay.
“Our culture, fostered by these innovative policies, makes us immensely proud, and we'll keep enhancing support for a sustainable and balanced career."
The 2023 Top 10 Employers for Working Families were:
- Audit Wales
- Citigroup
- Crown Prosecution Service
- Grant Thornton
- Imperial College London
- NatWest Group
- North East London NHS Foundation Trust (NELFT)
- Pinsent Masons
- Senedd Cymru/Welsh Parliament
- Yorkshire Building Society
