Overseas Shipholding Group has moved to challenge recent National Labor Relations Board rulings after charges were brought by the International organisation of Masters, Mates and Pilots, AFL-CIO (MM&P), MarineLink reported on 3 September 2026.
The filings, the report said, come from Overseas Shipholding Group itself together with its management arm OSG Ship Management and affiliate Alaska Tanker Company. The three entities are lodging separate appeals against distinct NLRB decisions arising from the MM&P complaints.
The company trio has not been reported as offering public comment beyond the appeal notices and the fact of their filings. The NLRB determinations being appealed were issued in the wake of charges the union filed under the board’s procedures.
Appeals of NLRB rulings are administrative and legal steps that can alter how a case proceeds; the company filings signal a decision to seek further review rather than accept the board’s findings. The MarineLink item did not supply further procedural detail or timing for the appeals.
Background
The MM&P lodged the original charges that led to the contested NLRB decisions. The union represents licensed deck officers and has previously pursued a range of labour disputes across the US maritime sector, according to the reporting.
The separate nature of the appeals means each corporate respondent is contesting a particular finding or set of findings made by the board following the union’s submissions. MarineLink described the appeals as distinct rather than a single consolidated petition.
What an appeal means
An appeal at this stage typically reflects a party’s choice to request review or to seek a different legal outcome through established avenues. It does not in itself reverse an earlier ruling; rather, it opens the matter to further consideration.
Depending on procedural developments and any subsequent decisions, appeals can affect timelines for collective bargaining or related labour-management negotiations, since unresolved board findings may remain a point of contention while cases proceed.
The MarineLink account confined itself to the factual record of the filings and did not report settlement or negotiated resolutions between the parties. There was no indication in the note that hearings or mediation had occurred in the interim.
Industry observers will watch for formal responses from the union and the companies and for any notices issued by the board that clarify the grounds for the appeals. The case will be of interest to ship operators and labour representatives given MM&P’s role among officer unions in the tanker sector.
The appeals add to a live record of disputes that test the mechanisms of collective bargaining and labour law enforcement in US maritime employment. How the board and reviewing authorities address the companies’ challenges may influence similar disputes in the months ahead.