Two West Midlands Ambulance Service workers who were suspended over an alleged breach of the Data Protection Act will be allowed to return to work.
The service said the pair had been re-instated, pending the results of an inquiry, after holding interviews with them and Unison officials on Tuesday.
Talks are planned next week with a third worker who was also suspended.
The staff, who are based in Shropshire, were sent home last week after control room logs were obtained by the BBC.
The logs suggested ambulances from the county were being sent to help in Birmingham and the Black Country.
Some workers are concerned that plans to close the ambulance control room in Shrewsbury could put patients at risk.
A West Midlands Ambulance Service spokesman said: "The information that was provided in the interviews has satisfied investigators that the two did not release confidential information outside of the organisation and they had no expectation that information they had in their possession would be released from the organisation.
"The trust is working as quickly as possible to complete the formal investigations and it is hoped that an interview can be held with the third member of staff next week once suitable union representation has been arranged.
"The trust is determined to protect members of the public from breaches of the Data Protection Act."