Denmark, Iceland, Lithuania, Luxembourg, the Netherlands, Norway, Slovenia and Sweden. In Switzerland, another Schengen signatory state, Hong Kong SAR passport holders are able to exercise a "gainful occupation" for a maximum of 8 days during their 90 days visa-exempt stay without the need to apply for a special work visa. However, this 8-day visa exemption excludes gainful occupation in the primary or secondary construction industry, civil engineering, catering and hotel services, industrial and private cleaning industry, surveillance and security services and sex industry. Alternatively, if in possession of a long term residence permit issued by any other Schengen member state, the Hong Kong SAR passport holder can exercise a gainful occupation for up to 3 months visa-free in Switzerland (without the industry-specific restrictions listed in the 8-day visa exemption). As Chinese citizens, those travelling on Hong Kong SAR passports are entitled to the consular protection offered by the People's Republic of China government while overseas. However, it is not uncommon for PRC authorities overseas to offer consular assistance to PRC citizens of Hong Kong origin travelling on their British National (Overseas) passports, as their British nationality is not recognised by the Chinese government. See also British consular protection enjoyed by BN(O) passport holders outside the PRC and the UK. Hong Kong SAR passport holders are also able to enjoy travel convenience under some bilateral agreements concluded between the PRC and other countries (on PRC passports in general). For example, holders of PRC passport and that of HKSAR passport are exempt from the fee for Nepalese tourist visas. On 10 April 2013, the Prime Minister of Australia, Julia Gillard, announced that, starting from 2015, holders of Hong Kong SAR e-passports would be able to use SmartGates in Australia on a trial basis. The trial period started in September 2015. Since June 2016, Hong Kong e-passport holders are eligible to use smartgates in Australia. Visa waiver reciprocity In some cases, Hong Kong SAR passport holders are subject to visa requirements to countries whose nationals can enter Hong Kong visa-free. For example, American and Indian nationals can enter Hong Kong visa-free for a maximum period of 90 and 14 days respectively, though Hong Kong SAR passport holders are required to apply for a visa for any visit to the United States or India. Other countries such as Paraguay and Costa Rica also require visas for any visits, despite nationals from these countries entering