The bill, which is currently working its way through Parliament, would allow the secretary of state to make regulations setting out the minimum service required for rail during industrial action.
Unions and workers would have to comply with these or face losing protections against being sued or dismissed.
The Transport Committee wants stakeholders to submit evidence to help it understand how a minimum service level on the rail network could be defined and the factors that should be taken into account.
This includes whether it would be set with reference to proportion of the timetable, service frequency, network coverage, key routes or other benchmarks.
The bill has proved highly controversial, attracting strong opinions both for and against. Unions and opposition parties have been particularly vocal in their opposition, expressing concern about the impact it will have on workers’ rights.
The Committee said it did not “seek to take a side” on the principles...