The introduction of fixed shifts to help working mums has gained national recognition for Seeboard Energy, which has offices in Hove and Worthing.
The gas and electricity supplier was concerned about staff's childcare problems caused by rolling shifts.
It responded by allowing staff to work fixed hours which they identified themselves to allieviate workrelated problems caused by delivering and collecting children to and from school.
Staff turnover halved as a result.
The initiative was recognised in national awards, run by Opportunity Now, which campaigns to break down the barriers facing women in the workplace.
Seeboard Energy was runner-up in the category for private sector companies, where finalists included Nationwide, Barclays Bank and BP.
Jacqui Rickman, of Hove, a customer service team leader, said: "The company deserves this recognition.
"I have two children and could not have considered a team leader post if I had to work full-time and change my shift every week.
"I was seriously considering leaving the company as there was no opportunity to progress.
"But working the same fixed hours every week on a job-share basis has made it possible for me to take on more responsibility and gain job satisfaction.
"I am also available to play an important part in my children's upbringing and development."
Managing director Peter Hofman said: "Feedback from staff focus groups identified the problem which we have been able to solve and the initiative has also helped us to extend the levels of service to customers."
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