The Supreme Court has ruled that employees who want to have their lawyers present at internal workplace disciplinary proceedings must establish an "exceptional" case that the process could not be fair without such legal representation.
The ruling was made in the case of an Irish Rail inspector facing a disciplinary process over alleged fuel theft through misuse of a company fuel card.
The court ruled he had not, at that stage of the process, shown such an exceptional case.
However, it said that did not necessarily prevent Barry McKelvey arguing at a later stage that he was entitled to lawyers.
The court's decision clarifies issues concerning access to legal representation for employees in such situations.
In two judgments, all five judges dismissed Mr McKelvey's appeal against a Court of Appeal decision which overturned a High Court injunction restraining the inquiry until Irish Rail allowed him have lawyers.
A long-serving Irish Rail employee, Mr McKelvey's responsibilities included managing employees maintaining the Dublin to Cork rail line.
As part of that work, he was given fuel cards to facilitate refuelling of company vehicles and machinery and other employees also had use of such cards.
Irish Rail began a preliminary investigation in late 2016 after it became concerned about the amount of fuel purchased using fuel cards in Mr McKelvey's division, division three.
He was interviewed and said some purchases could have been made using his card without his knowledge and his card may have been taken by another staff member.
After being advised in March 2017 he was being suspended on basic pay until further notice, his trade union representative, Paul Cullen, and Sinnott Solicitors, had written letters on his behalf challenging the lawfulness of his suspension.
Irish Rail in May 2017 initiated its formal disciplinary process to inquire into "theft of fuel through the misuse of a company fuel card(s)".
Mr McKelvey sought to be represented by a solicitor and a barrister at an oral hearing and made various complaints about the procedures.
Irish Rail argued legal representation was unnecessary for reasons including he would be represented by an experienced trade union official.
The Supreme Court agreed to hear a further appeal by Mr McKelvey after the COA overturned a High Court injunction requiring Irish Rail permit him to have lawyers at the disciplinary hearing.
Giving the court's main judgment, Chief Justice Frank Clarke said the important issue was the entitlement of an employee to be legally represented at an internal disciplinary hearing to be conducted by their employer as part of an agreed code.
A 2009 High Court decision, the Burns decision, represents the law concerning such entitlement, he said.
He set out the principles applicable to legal representation in an internal disciplinary process, including that the process be fair.
Mr McKelvey was seeking to restrain a process that has only just begun, he noted.
He could not see anything in the allegation against Mr McKelvey, the likely evidence, or the process likely to be followed which would put these disciplinary proceedings "beyond the competence of an experienced trade union official".
The cumulative effect of factors such as a serious allegation and particularly difficult issues of law or extremely complex facts could lead, in an "exceptional" case to a view that legal representation was required, he said.
This did not seem to be such a case, he held.