Both  bills provide for the possibility of including periods of work under a contract of mandate or  as a sole trader in the length of job seniority. The  seniority affects the acquisition of employee rights, in particular, the right to holiday leave. The speaker of the Sejm referred both bills to the extraordinary committee for changes in codifications. The amendments are intended to standardise the rules for determining seniority, regardless of the form of employment, or gainful activity.